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April 10, 2026
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"Muhammad Ghauri presumably offered prayers within the stipulated two and a half days. Subsequently in about 1200 AD the Adhai Din Ka Jhopra was completed with a well-carved facade which is best described in the words of the ASI Report25 for 1893: The whole of the exterior is covered up with a network of tracery so finely and delicately wrought that it can only be compared to a fine lace. Cunningham described the exterior of the Jhopra even more eloquently: For gorgeous prodigality of ornament, beautiful richness of tracery, delicate sharpness of finish, laborious accuracy of workmanship, endless variety of detail, all of which are due to the Hindu masons, this building may justly vie with the noblest buildings which the world has yet produced."
"Cunningham had personally visited Malwa during 1874 AD as well as 1876 AD. This is what he had to write in Volume X of the ASI Report: Inside the town there is a stone masjid called Bijay Mandir, or the temple of Bijay. This Hindu name is said to have been derived from the founder of the original temple, Bijay Rani. The temple was thrown down by the order of A urangzeb, and the present masjid erected in its place; but the Hindus still frequent it at the time of the annual fair. By the Muhammadans it is called the Alamgiri masjid, while Bhilsa (earlier name ofVidisha) itself is called Alamgirpur. The building is 78'hfeet long by 26'h feet broad, and the roof is supported. on four rows of plain square pillars with 13 openings to the front."
"The most sacred and eastern source of the Sarasvatī is said to be Adi-Badri Kunda north of Katgadh [Kathgarh], while the latter is still remembered to be the place where the sacred stream came out of the hills."
"Physics, chemistry, astrophysics are obviously the ideal field for the tidy mind ...in the biological and geological sciences the tidy mind often goes astray and the passive, unmathematical approach may be more suitable. ...The sciences that deal with natural process, geology or geography, or with life, zoology or botany, have an immensely more complicated task than physics or chemistry. ... A particular danger, I believe, lies in an oversimplified use of mathematical or statistical methods of investigation, in which obviously erroneous results may be obtained by a selection of only a few of many relevant factors to be considered."
"My fossils, ferns and porcelain (i.e. my hobbies) are an island of sanity in a mad world, an island found by others of my profession who devote a quiet hour to their postmarks, butterflies, stamps or poetry. My palaeontology was a sure restoration of equanimity after the frustrations of working for and with some politicians."
"Lastly, what is history for? This is perhaps a harder question than the others; a man who answers it will have to reflect rather more widely than a man who answers the three we have answered already. He must reflect not only on historical thinking but on other things as well, because to say that something is 'for' something implies a distinction between A and B, where A is good for something and B is that for which something is good. But I will suggest an answer, and express the opinion that no historian would reject it, although the further questions to which it gives rise are numerous and difficult."
"a) The definition of history? Every historian would agree, I think, that history is a kind of research or inquiry. What kind of inquiry it is I do not yet ask. The point is that generically it belongs to what we call the sciences: that is, the forms of thought whereby we ask questions and try to answer them. Science in general, it is important to realize, does not consist in collecting what we already know and arranging it in this or that kind of pattern. It consists in fastening upon something we do not know, and trying to discover it. Playing patience with things we already know may be a useful means towards this end, but it is not the end itself. It is at best only the means. It is scientifically valuable only in so far as the new arrangement gives us the answer to a question we have already decided to ask. That is why all science begins from the knowledge of our own ignorance: not our ignorance of everything, but our ignorance of some definite thing-the origin of parliament, the cause of cancer, the chemical composition of the sun, the way to make a pump work without muscular exertion on the part of a man or a horse or some other docile animal. Science is finding things out: and in that sense history is a science."
"Language in its original imaginative form maybe said to have expressiveness, but no meaning. About such language we cannot distinguish between what the speaker says and what he means... Language in its intellectualized form has both expressiveness and meaning. As language, it expressed a certain emotion. As symbolism, it refers beyond that emotion to the thought whose emotional charge it is... The progressive intellectualization of language, its progressive conversion by the work of grammar and logic into a scientific symbolism, thus represents not a progressive drying-up of emotion, but its progressive articulation and specialization. We are not getting away from an emotional atmosphere into a dry, rational atmosphere; we are acquiring new emotions and new means of expressing them."
"We can now return to the distinction between language and symbolism. A symbol is language and yet not language. A mathematical or logical or any other kind of symbol is invented to serve a purpose purely scientific; it is supposed to have no emotional expressiveness whatever. But when once a particular symbolism has been taken into use and mastered, it reacquires the emotional expressiveness of language proper. Every mathematician knows this. At the same time, the emotions which mathematicians find expressed in their symbols are not emotions in general, they are the peculiar emotions belonging to mathematical thinking."
"I have already said that a thing which 'exists in a person's head' and nowhere else is alternatively called an imaginary thing. The actual making of the tune is therefore alternatively called the making of an imaginary tune. This is a case of creation, just as much as the making of a plan or a disturbance, and for the same reasons, which it would be tedious to repeat. Hence the making of a tune is an instance of imaginative creation. The same applies to the making of a poem, or a picture, or any other work of art."
"For I do not think of aesthetic theory as an attempt to investigate and expound eternal verities concerning the nature of an eternal object called Art, but as an attempt to reach, by thinking, the solution of certain problems arising out of the situation in which artists find themselves here and now. Everything written in this book has been written in the belief that is has a practical bearing, direct or indirect, upon the condition of art in England in 1937, and in the hope that artists primarily, and secondarily persons whose interest in art is lively and sympathetic, will find something of use to them."
"Time, as succession of past, present and future, really has its being totum simul for the thought of a spectator, and this justifies its ‘spatialized’ presentation as a line of which we can see the whole at once."
"The ideal and the real are not mutually exclusive. A thing may be ideal and also real."
"The real is the present, conceived not as a mathematical point between the present and the past, but as the union of present and past in a duration or permanence that is at the same time change. Thus the past as past and the future as future do not exist at all, but are purely ideal; the past as living in the present and the future as germinating in the present are wholly real and indeed are just the present itself. It is because of the presence of these two elements in the present... that the present is a concrete and changing reality and not an empty mathematical point."
"In actual history, events overlap ; you cannot, except by a confessed fiction, state the point at which the event called the Middle Ages ends and the event called the Modern Period begins."
"The word art has in ordinary usage three senses. First, it means the creation of objects or the pursuit of activities called works of art, by people called artists ; these works being distinguished from other objects and acts not merely as human products, but as products intended to be beautiful. Secondly, it means the creation of objects or the pursuit of activities called artificial as opposed to natural; that is to say objects created or activities pursued by human beings consciously free to control their natural impulses and to organize their life in a plan. Thirdly, it means that frame of mind which we call artistic, the frame of mind in which we are aware of beauty."
"The general conception here maintained is not new; it is one already familiar from the works of Coleridge, Croce and many others; it is the view that art is at bottom neither more nor less than imagination."
"One of Collingwood's earliest attempts to define the aesthetic essence of art. His aim, he writes in the preface, is to state a general conception of art and develop its consequences. His conception is one already familiar through the writings of others -- "that art is as bottom neither more nor less than imagination" -- but from his observation he goes on to outline the various distinctions between subordinate conceptions of art, and to attempt to demonstrate their place in the general conception, and the place of both in life. He urges that the meaningfulness of art cannot be torn from the imaginative setting in which it is embedded, and that we must attempt to explain the process by which an artist reaches a particular point of view on reality."
"It (the dream) is essentially a structure which is, in the terminology of the psycho-analyst, unconscious. The dreamer himself is unaware of it until, in collaboration with his psycho-analyst, he brings it to light. The mythological way of stating this fact is to say that the structure was "in the unconscious." This is frankly non-sense . . . because the structure is not in the unconscious but precisely in the dream, for it is the structure of the dream; and the dream is con? scious enough . . . the revelation made by psycho-analysis is not the bringing into consciousness of what was unconscious, but the bring? ing into explicitness of what was implicit, the noticing of something already actually experienced in a light in which it had not been noticed before . . . the new light in question is nothing but the hitherto overlooked structure of the experience in question ...."
"All history is art, because to tell a story is art, whereas to tell a true story is history: thus history is art, but a specification of art, art qualified by a condition (truth) which deprives it of a part of its character but not of all."
"The essence of this conception is .. the idea of a community as governing itself by fostering the free expression of all political opinions that take shape within it, and finding some means of reducing this multiplicity of opinions to a unity."
"The chief business of seventeenth-century philosophy was to reckon with seventeenth-century science... the chief business of twentieth-century philosophy is to reckon with twentieth-century history."
"Perfect freedom is reserved for the man who lives by his own work and in that work does what he wants to do."
"If it is asked why Socrates permits certain forms of art to be retained in the ideal state instead of consistently banishing all alike, the answer is surely obvious: these are, in the opinion of Socrates, the forms which art will take in the hands of men who understand its true nature."
"The artist must prophesy," writes Collingwood, "not in the sense that he foretells things to come, but in the sense that he tells his audience, at risk of their displeasure, the secrets of their own hearts."
"On the whole, the scientist is better off if he collects his facts by accident, little by little, so he can study them before he tries to fit them into a jigsaw puzzle, This is how the late Tom Lethbridge came to arrive at his theories about other dimensions of reality. It is also how Guy Lyon Playfair came to develop his own theories about the nature of the poltergeist."
". . . if scientists could get rid of the mental block which prevents them investigating a vast subject right under their noses, they could soon learn a great deal more than my wife and I are capable of doing."
"Civilisation as a term suggests human agency. Things don't come together organically."
"But archaeology […] often acts as a parallel narrative to history: if you start digging with a textbook in your hand, you are soon going to get confused. You have to be comfortable with the idea that there are many different versions of history."
"If you are looking at fine buildings or the literature of the period, you have to be aware that you are only dealing with the mindset of the elite."
"Writing certainly develops as an elite initiative at this [ancient] time. It helps them to harness the workforce – it's a way of communicating with the gods; and it's a way for the elites to list what you have, and what they have."
"In some respects, cities are bottom-up processes, but they are also top-down initiatives – and elites soon develop. Religion is older than the city, but the elites quickly build temples and turn themselves into priests. As they become more powerful the temples they build also have huge storehouses. What you see is that the man who has a surplus of material is the powerful man. This is because everyone is living hand-to-mouth, and if you have a bad harvest one year, well, you're stuffed."
"Civilisation as a term suggests human agency. […] It is the way in which people have articulated how and why they wanted to live in communities. It's about how we imagine the perfect community. […] I think the most ambitious thing humans have ever done is deciding to live together with people whom they didn't know in cities. It's really difficult to build a community, to learn to celebrate difference and to live harmoniously together, and we fail all the time."
"There are winners and losers – and human will created the world we live in."
"When I was going through graduate school at Cambridge it appeared that humanities scholarship, stung by a decade of unsympathetic Thatcherite rule, had withdrawn into its own world. Academic terminology, partly fuelled by a mania for post-modernist dogma, had become evermore complex and impenetrable to anyone outside of the rarified circle of academe."
"Whether we regard the depth of Dr. Young's learning, the extent of his research, the accuracy of his statements, or the beauty and originality of his theoretical views, in whatever way we contemplate these Lectures, our admiration is equally excited. They embody a complete system of Mechanical Philosophy drawn from original sources, and illustrated by a hand capable of reducing them to the most perfect subjection. Unlike other popular writers, who... either take the sciences at second hand, or content themselves simply with... adopting the hypotheses of more distinguished philosophers, Dr. Young travelled over the whole literature of science, and whilst we are astonished at the rich store of materials which he has collected, we find nothing more prominent than the impress of his own acute and powerful mind."
"This doctrine of interference of undulations was the absolutely novel part of Young's theory. The all compassing genius of Robert Hooke had... very nearly apprehended it more than a century before, as Young himself points out, but... even with the sagacious Hooke it was only a happy guess... and utterly ignored by all others. Young did not know of Hooke's guess until he himself had fully formulated the theory, but he hastened then to give his predecessor all the credit that could possibly be adjudged his due... To Hooke's contemporary, Huyghens, who was the originator of the general doctrine of undulation as the explanation of light, Young renders full justice also. For himself he claims only the merit of having demonstrated the theory which these and a few others of his predecessors had advocated without full proof."
"Young... examined the colors that are produced by scratches on a smooth surface, in particular testing the light from "Mr. Coventry's exquisite micrometers," which consist of lines scratched on glass at measured intervals. These microscopic tests brought the same results as the other experiments. The colors were produced at certain definite and measurable angles, and the theory of interference of undulations explained them perfectly, while, as Young affirmed... no other theory hitherto advanced could expIain them at all. Taking all the evidence together Young declared that he considered the argument he had set forth in favor of the undulatory theory of light to be sufficient and decisive."
"As early as 1793, when he was only twenty, Young had begun to communicate papers to the of London, which were adjudged worthy to be printed in full in the Philosophical Transactions; so it is not strange that he should have been asked to deliver the before that learned body the very first year after he came to London. The lecture was delivered November 12, 1801. Its subject was "The Theory of Light and Colors," and its reading marks an epoch in physical science; for here for the first time was brought forward convincing proof of that undulatory theory of light... which holds that light is not a corporeal entity, but a mere pulsation in the substance of an all-pervading ether, just as sound is a pulsation in the air, or in liquids or solids. Young had... advocated this theory at an earlier date, but it was not until 1801 that he hit upon the idea which enabled him to bring it to anything approaching a demonstration. It was while pondering over the familiar but puzzling phenomena of colored rings into which white light is broken when reflected from thin films—...—that an explanation occurred to him which at once put the entire undulatory theory on a new footing. With that sagacity of insight which we call genius, he saw of a sudden that the phenomena could be explained by supposing that when rays of light fall on a thin glass part of the rays being reflected from the upper surface other rays reflected from the lower surface might be so retarded in their course through the glass that the two sets would interfere... By following up this clew with mathematical precision, measuring the exact thickness of the plate and the space between the different rings of color, Young was able to show mathematically what must be the length of pulsation for each of the different colors of the spectrum. He estimated that the undulations of red light... must number about 37,640 to the inch, and pass any given spot at a rate of 463 millions of millions of undulations in a second, while the extreme violet numbers 59,750 undulations to the inch or 735 millions of millions to the second."
"There were giants abroad in the world of science in the early days of our century, Herschel, Lagrange, and Laplace; Cuvier, Brongniart, and Lamarck; Humboldt, Goethe, Priestley—what need to extend the list?—the names crowd upon us. But among them all there was no taller intellectual figure than that of a young Quaker who came to settle in London and practise the profession of medicine in the year 1801. The name of this young aspirant to medical honors and emoluments was Thomas Young. He came fresh from professional studies at Edinburgh and on the Continent, and he had the theory of medicine at his tongue's end; yet his medical knowledge, compared with the mental treasures of his capacious intellect as a whole, was but as a drop of water in the ocean. Incidentally the young physician was prevailed upon to occupy... the chair of Natural Philosophy at the , which Count Rumford had founded, and of which Davy was then Professor of Chemistry—the institution whose glories have been perpetuated by such names as Faraday and Tyndall, and which the Briton of to-day speaks of as the "Pantheon of Science.""
"We hear no more from Young about his theory of colors until 1807, when he published the first volume of his celebrated work, "A Course of Lectures on Natural Philosophy and the Mechanical Arts." ...Young gives a concise statement of his views on the analysis of the sensations of color and supports these views with conclusive experiments with rotating colored discs; but, strange to say, he omits from this account... all mention of the physiological explanation of it which he gave in the Bakerian Lecture of 1801. ... [I]n the Natural Philosophy we read that, "The sensations of various kinds of light may also be combined in a still more satisfactory manner by painting the surface of a circle with different colours... and causing it to revolve with such rapidity, that the whole may assume the appearance of a single tint, or of a combination of tints, resulting from the mixture of the colours." These experiments were evidently first made by Young; and are fully described in the text and perfectly illustrated... in the plates of Young's work. These experiments have been carefully repeated by Helmholtz, Maxwell, and others, and of their general accuracy there is no doubt. We can readily imagine the delight with which Young must have viewed these beautiful experiments, which, however, together with other truths unfolded by him, were destined to remain unnoticed, "until a later generation, by slow degrees, arrived at the discovery of his discovery.""
"The next publication by Young on his theory of color... a paper read by him before the , on July 1, 1802... "An account of some cases of the production of colours, not hitherto described." ... Young changed his three elementary color-sensations from red, yellow, and blue, to red, green, and violet, in consequence of Dr. Wollaston's correction of the description of the prismatic spectrum." ... Wollaston... only observed imperfectly the dark lines of the spectrum, now known as Fraunhofer's lines, but he imagined he saw a spectrum... divided into four distinct and separated "primary divisions." He at once inferred and erroneously that Newton's analysis... was false; that no orange or yellow exists... but between the red and the blue there exists only a "yellowish green." ...Young made a similar but even greater error in his description... I imagine that when Wollaston's sharp eye caught the glimpse of the divided spectrum he naturally thought... that the dark lines were the dividing lines of the pure simple colors of the solar spectrum. ... Young in finally selecting red, green and violet as the three elementary color-sensations was not, as Helmholtz states, guided in their choice "by the consideration that the extreme colors of the spectrum occupied the privileged positions," but selected those colors on hearing of Wollaston's supposed complete analysis of the sun's light into red, greenish blue and violet colors, separated from each other in the spectrum by dark spaces."
"The first publication by Young of his theory of color appeared in a entitled, "On the Theory of Light and Colors," which Young read before the Royal Society on Nov. 12 1801. ... The fact that Young, the founder of the undulatory theory of light, in this Bakerian Lecture, in which it has been said that he laid the foundations of that doctrine, should set forth his views in a series of postulates followed by citations from the writings of Newton, to give them weight and proof, may justly surprise those who have trusted to the second-hand information derived from carelessly-complied text books and from hastily prepared popular lectures. But then, where would be the pugilistic charm of the popular lecturer on the undulatory theory of light, if Newton, his champion, the violent defender of the emanation cause, should decline to enter as a contestant? ... Young's hypothesis imagines each sensitive point of the retina to contain particles capable of vibrating in perfect unison to those vibrations causing three principal colors (red, yellow, and blue, in this the first publication of his hypothesis) "and that each of the particles is capable of being put in motion, less or more forcibly, by undulations differing less or more from a perfect unison." This would suppose such a triple molecular constitution of each nerve fibril as to cause the three species of its constituent molecules (or the atoms forming the molecules) to be in tune with the three rates of vibration corresponding respectively to the undulations of the ether causing red, yellow, and blue. He afterward says: "and each sensitive filament of the nerve may consist of three portions, one for each principal color." We have here a conception of the mode of action of an ætherial vibration on the retinal nerve fibrils which has not been described by those who have given accounts of Young's theory of color. ...the statements made by Young in the foregoing paper concerning his color hypothesis were entirely hypothetical not having been based on any observation or experiment either of his own or of others..."
"The propriety of the selection which was made by the Institute of France, of Wollaston, Davy, and Young, as the most eminent representatives of English science in that age, was disputed by very few of their contemporaries... If Young held the lowest place in the order of precedency then, he unquestionably occupies the highest now. The most brilliant achievements of Davy, whether considered singly or collectively, are probably surpassed in importance by the discovery and demonstration of the interference of light; but whilst the first received the prompt and unhesitating acknowledgment of the scientific world and at once secured for their author the honours and rewards which were due to his merits, the second, even after emerging from a long period of misrepresentation and neglect, had to make its way, step by step... against the opposition of adverse and long established theories, supported by the authority of the two greatest men known to the scientific history of the past and the present age; and it only received a tardy and reluctant recognition—and that rather by implication than avowedly—when near the close of his life, the was awarded by the Royal Society to Fresnel, who completed the structure of which Dr. Young had laid the foundations. If we refer to his other scientific works, embracing so wide a range of subjects, and some...—more especially his essays on the tides and the cohesion of fluids—so remarkable for the boldness and originality of their treatment, we shall find that they were rarely read and never appreciated by his contemporaries, and even now are neither sufficiently known nor adequately valued: whilst if justice was awarded more promptly and in more liberal measure... to his hieroglyphical labours, these also were singularly unfortunate... by coming into collision with adverse claims which were most unfairly and unscrupulously urged in his own age, and not much less so... in very recent times. The great variety also of his titles to commemoration as a classical scholar and archaeologist, a medical writer, an optician, a mathematician, or a physical philosopher, increases the difficulty of judging his relative rank amongst men of celebrity, whether they were his contemporaries or not: for the position which he might not venture to claim... to any single department of human knowledge, might be readily conceded to him when his combined labours were taken into consideration."
"A Memoir on Hydraulics, printed in the Philosophical Transactions for 1808, was introductory to another in the same Collection for the following year, on the Functions of the Heart and Arteries. The connection between these subjects was considered by him... sufficiently close to give them both a professional character, and thus to exempt them from the restriction which he had imposed upon the class of publications which alone should be allowed to appear under his own name. ...Few persons can be found ...with a union of acquirements so remote from each other as to be able to prosecute an inquiry of this nature, or to judge of the correctness of the conclusions to which it leads; but as such it was exactly suited to Dr. Young, who delighted in questions so obscure and difficult, where his various knowledge and bold spirit of speculation had full room for their exercise."
"We propose... to call the attention of our readers to some of the more remarkable Memoirs, or Philosophical Essays, of Dr. Young, which have not elsewhere been noticed; selecting those which are distinguished... or which are otherwise calculated to show the extraordinary capacity which he possessed of solving the most difficult problems in the applications of mathematics to natural philosophy, by processes apparently the most inadequate to the purpose. He never confined himself to the beaten track of a systematic investigation. We find in his writings no symmetrical formula or analytical refinements. There is no seeking after generalities, when the particular question which he has in hand does not require them; whilst every expedient is freely resorted to, however irregular and unusual, if it serves the purpose which he has in view. Important and difficult steps are passed over as manifest, terms are neglected as insignificant, analogies take the place of proofs, and we are surprised to find ourselves at the end of an investigation, even within the limits of space which would commonly be deemed hardly sufficient to master the difficulties which meet us at the beginning. But his rare sagacity hardly ever deserts him; and though he has occasionally been led to hasty and premature conclusions, or committed mistakes in numerical calculations, from the brevity and rapidity of his processes, yet nothing can be more surprising than the general soundness of his views of mechanical principles and their applications, and the correctness both of his philosophical and numerical results."
"It was the kindred science of sound which had suggested to Young his principle of interference, and he was under a similar obligation to the same science for the suggestion of the principle which formed the first step in the solution of the great problem of double refraction."
"Dr. Young, by his own confession, and for reasons... alluded to, was not adapted for a popular lecturer. His style was too compressed and laconic, and he had not sufficient knowledge of the intellectual habits of other men, to address himself prominently to those points of a subject where their difficulties were likely to occur. If... delivered nearly in the form in which they are printed, [the lectures] must have been generally unintelligible even to well-prepared persons, notwithstanding all the assistance which models, drawings, and diagrams could afford."
"In the year 1801, Young accepted the office of Professor of Natural Philosophy at the Royal Institution, which had been established in the year preceding, chiefly by the exertions of the well known Sir Benjamin Thompson, Count Rumford. ...After managing the affairs of the Institution for a few months, and commencing the editing of its Journal, he quarrelled with some of the directors and abandoned the scheme altogether. The conducting of the Journal was thenceforward entrusted to the joint care of Dr. Young and his colleague, Mr. Davy, at that time Professor of Chemistry, in whose hands and in those of his not less distinguished successor, Mr. Faraday, the chemical laboratory of the Institution has become the most celebrated in Europe. Dr. Young's first lecture was delivered on the 20th of January, 1802, and the last on the 17th of May. The whole number of lectures given during this Session was thirty-one, which was increased, by the introduction of new subjects in the following year, to sixty... his great work, entitled "A Course of Lectures on Natural Philosophy and the Mechanical Arts," which was published four years afterwards. They are divided into three parts, containing twenty lectures each. The 1st, including Mechanics, theoretical and practical ; the 2d, Hydrostatics, Hydrodynamics, Acoustics, and Optics ; the 3rd, Astronomy, the Theory of the Tides, the Properties of Matter, Cohesion, Electricity and Magnetism, the Theory of Heat and Climatology. They form altogether the most comprehensive system of Natural Philosophy, and of what the French call Physics, that has ever been published in this country; equally remarkable for precision and accuracy... and for the addition or suggestion of new matter or new views in almost every department of philosophy. ... We have heard it remarked, that no writer, on any branch of science which the lectures treat of, can safely neglect to consult them, so rich is the mine of knowledge which they contain; and it is a well known fact, that many important propositions and discoveries have been more or less clearly indicated in them, which have only been recognized or pointed out when other philosophers discovered them independently, or announced them as their own."
"It is now more than twenty years since I somewhat rashly undertook to write the Life of Dr. Young. ...The undertaking was consequently abandoned, and it was proposed to transfer it to other hands; but it was not found easy to secure the services of a person who possessed sufficient scientific knowledge to enable him to write the life of an author whose works were so various in their character and not unfrequently so difficult to understand and analyse, as those of Dr. Young."