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April 10, 2026
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"This gem of chastity, this emeraud."
"The deep green emerald, in whose fresh regard Weak sights their sickly radiance do amend."
"Polycrates considered which of his treasures it would most grieve his soul to lose, and came to this conclusion: he wore a seal set in gold, an emerald, crafted by Theodorus son of Telecles of Samos."
"But for all that, Sancho, I have falne upon one thing, which is, that thou didst ill describe her beautie to me: for if I forget not, thou saydst she had eyes of Pearles, and such eyes are rather the eies of a Sea-Breame then a faire Dames: but as I thinke, Dulcineas eyes are like two greene Emeralds rared with two Celestiall Arkes, that serve them for Eyebrowes. And therefore for your pearles, take them from her eyes, and put them to her teeth: for doubtlesse, Sancho, thou mistook'st eyes for teeth."
"I took ship for Tyre in Phoenicia, where I had learned by inquiry that there was a holy temple of Heracles. There I saw it, richly equipped with many other offerings, besides two pillars, one of refined gold, one of emerald: a great pillar that shone at night."
"Whilst the fond people offer’d Sacrifice To Saphyrs, ’stead of Veins and Arteries, And bow’d unto the Diamonds, not her Eyes."
"Sapphire produces peace of mind and equanimity. It chases out evil thoughts by establishing healthy circulation. It opens barred doors to the spirit. It produces a desire for prayer. It brings peace, but he who would wear it must lead a pure and holy life."
"I have sapphires and rare gems On my mantle’s sacred hems,"
"Between thy breasts (than down of swans more white) There plays the sapphire with the chrysolite."
"The heaven-hued sapphire"
"[H]is belly is as bright ivory overlaid with sapphires."
"The Indy saphyre blew Her vaynès doth ennew;"
"A sapphire shines as blue as heaven;"
"Proposals for chemical weapons that arose during the American Civil War are described. Most incendiary and all biological agents are excluded. The described proposals appeared primarily in periodicals or letters to government officials on both sides. The weapons were usually meant to temporarily disable enemy combatants, but some might have been lethal, and Civil War caregivers were ill-prepared to deal with the weapons’ effects. Evidently, none of the proposed weapons were used. In only one instance was use against civilians mentioned. Among the agents most commonly proposed were cayenne pepper or other plant-based irritants such as black pepper, snuff, mustard, and veratria. Other suggested agents included chloroform, chlorine, hydrogen cyanide, arsenic compounds, sulfur, and acids. Proponents usually suggested that the chemicals be included in explosive artillery projectiles. Less commonly proposed vehicles of delivery included fire engines, kites, and manned balloons. Some of the proposed weapons have modern counterparts."
"From this theoretical structure of nature evolved the assumptions upon which alchemy was based: the unity of the universe and relatedness of all natural phenomena as expressed by the idea of from which all bodies were formed and into which they might again be dissolved, and the existence of a potent transmuting agent capable of promoting the change of one kind of material into another... This transmuting agent became known as the philosopher's stone, an object so quintessential it could not only transmute metals, but cure illness and prolong life....The process was composed of three stages. In the first, the alchemist heated the primary material, usually a blend of salt, mercury and sulfur, until it dissolved and turned black with decay. Under this continuous heat the liquid became dry, powdery and white. If all was done properly, the materials would eventually recombine and become a brilliant red, the color of the philosopher's stone."
"The did not arrive in China until around 1500 BCE, and iron appeared only about 500 BCE, but by the beginning of their alchemical age, around 100 CE, the Chinese had knowledge of and ... mercury, sulfur and several of the common salts, such as ."
"He noticed that when copper and sulphur are mixed, they exhibit an , which increases with increasing temperature until finally they combine, and all traces of electricity disappear. Hence, he inferred that the same forces which, acting on masses at a distance, produce electric phenomena, when acting on atoms at small distances, produce chemical combination, the positive electricity of the one atom attracting and holding the negative of the other. In the positive charge is on one and the negative on the other, but these two charges have to be discharged through the electrode before the elements are set free. This is the reverse of what takes place in combination. Davy in this view differed from the electro-chemical theory of Berzelius."
"Sulphuric acid he made by distilling green vitriol (ferrous sulphate), and by distilling nitre (potassium nitrate), and (double sulphate of potassium and aluminium). he prepared, but said it was of little use as a medicine."
"By 3000 BCE the Sumerians, perhaps while heating copper to make it more malleable, had discovered that more copper could be retrieved from the fire if the metal were heated with certain types of dirt and stones—that is, certain earths. These earths were the metal s, and the process they discovered, ', reduced metal salts to pure metal by the action of in the fire. The process of changing metal salts into pure metal is known as reduction because the metal without the accompanying oxygen, , or sulfur of the salt weighs less than the ore. Eventually metal workers learned to distinguish various metal-bearing ores by color, texture, weight, flame color, or smell when heated (such as garlic odor of ores) and they could produce a desired material on demand."
"Pliny recorded processes involving metals, salts, sulfur, glass, mortar, soot, ash, and a large variety of s, earths, and stones."
"The sulphur, the property of dryness and heat, ultimately overcame the mercury, the property of wetness and cold, and thus changes were effected. ...[S]ulphur was the father, mercury the mother, and metals were conceived between them. In this expression the philosophical principles are meant, not the ordinary substances called sulphur and mercury."
"The more logical mind of Artephius Longaevus introduced a modification of this theory. He distinguished two properties in a metal—the visible and the occult. The former, comprehending its colour, lustre, extension, and other properties visible to the eye, he called its "sulphur"; the latter, comprehending its fusibility, malleability, volatility, and other properties not visible until after... special treatment, he called its "mercury.""
"He strongly maintained the virtues of aurum potabile (liquid gold), and wrote a book entitled Medicinae Chymicae et Veri Potabilis Auri Assertio (1610). Another tract, De Lapide philosophorum et Lapide Rebis, related to the older alchemy. ...[I]n alchemical symbolism "Rebis" was the name given to the hermaphrodite figure representing the union of the great philosophical principles, sulphur and mercury, in the operation of making the philosopher's stone..."
"Paracelsus had discarded the disgusting decoctions of Galen and introduced chemical medicines, while Libavius and Sala had dismissed the fanatical conceptions which disfigured and almost nullified the teachings of both Paracelsians and Rosicrucians, but chemists still adhered either to the Aristotelian doctrine of the four elements, or to the later theory of the three principles (mercury, sulphur, and salt). (1577—1644) was the first to deny these propositions, and to begin a revolution in the philosophy of chemistry."
"In 1648 he demonstrated the possibility of making blue vitriol () by boiling copper with sulphuric acid."
"[T]he most valuable work of Cavendish was contained in the two papers "Experiments on Air" (1784-5)... to determine the phlogistication of air... [i.e.,] the change in air when s are calcined in contact with it, and when sulphur, , or similar substances, are burned in it."
"Volcanic ash, despite the name, is dense as rock and can cause significant damage to structures, power lines and communications. It is also toxic because it contains chemicals such as sulfur, chlorine or fluorine, and it can therefore affect water supplies."
"If you prudently desire to make our elixir, you must extract it from a mineral root. For as Geber saith, you must obtain the perfection of the matter from the seeds thereof. Sulphur and mercury are the mineral roots, and natural principles, upon which nature herself acts and works in the mines and caverns of the earth, which are viscous water, and subtil spirits running through the pores, veins, and bowels of the mountains. Of them is produced a vapour or cloud, which is the substance and body of metals united, ascending, and reverberating upon its own proper earth, (as Geber sheweth) even till by a temperate digestion through the space of a thousand years, the matter is fixed, and converted into a mineral stone, of which metals are made."
"There is another type of exploding supernova that also seeds the Galaxy with elements. This is the . This explosion involves a binary system in which a star and an intermediate-mass star (a ) orbit each other. The two stars are so close to each other that the white dwarf gradually pulls a considerable amount of material from the outer envelope of the expanding red giant. At a certain point the white dwarf will acquire so much mass that it collapses under its own weight and produces an explosion that blasts the bulk of its material into the interstellar medium—mostly in the form of iron, but also some sulfur, and . Such explosions contributed about 70 percent of the iron we see today in the Galaxy."
"'isn't it brimstone morning?' 'I forgot, my dear,' rejoined Squeers; 'yes, it certainly is. We purify the boys' bloods now and then, Nickleby.' 'Purify fiddlesticks' ends,' said his lady. 'Don't think, young man, that we go to the expense of flower of brimstone and molasses, just to purify them; because if you think we carry on the business in that way, you'll find yourself mistaken, and so I tell you plainly. ...They have the brimstone and treacle, partly because if they hadn't something or other in the way of medicine they'd be always ailing and giving a world of trouble, and partly because it spoils their appetites and comes cheaper than breakfast and dinner. So, it does them good and us good at the same time, and that's fair enough I'm sure.'"
"[A]lchemists accounted for the diversity of metals by five causes:— 1. Variation in the proportion of the principles, mercury and sulphur. 2. Variation in the purity of these principles. 3. Variation in the duration of the period of concoction to which the compound was subjected in the bowels of the earth. 4. Variation in planetary influences. 5. Variation in accidental influences."
"The mercury of a metal... represented its lustre, volatility, fusibility, and malleability; the sulphur of the metal, its colour, combustibility, affinity, and hardness."
"[T]he writings and labours of the alchemists were both extensive and important. ...[T]heir studies, although misdirected, were not... haphazard. The alchemists had a definite, and... logical, system of philosophy... [T]hey recognised—(1) the unity of matter; (2) the three principles—philosophical mercury, sulphur, and salt; (3) the four elements—fire, air, water, and earth; and (4) the seven metals—gold, silver, mercury, copper, , tin, and ."
"The salt of the was merely a means of union between the mercury and the sulphur, just as the vital spirit in man unites soul and body. It was doubtless devised to impart a triple form to the idea, in conformity with the method of the theological schoolmen."
"At a still later date it was argued that exact and natural sciences proceed by induction and deduction, and occult and spiritual sciences by analogy. Following out this line of thought the alchemists produced the following remarkable :—"
"On November first, 1772, Lavoisier had deposited a sealed note with the Secretary of the Academy of Sciences, in which he states that he has discovered the sulphur and when burned gained weight. "This increase of weight is due to a great quantity of air which becomes fixed during the combustion and which combines with the vapours." He expresses his conviction that the same is true of all combustions and s."
"Of Sulphur, Pliny states, there are four kinds, but he makes no very intelligible characterization of their differences. "Live" sulphur (sulphur vivum), ocurring in masses or blocks is the only kind used in medicine. The others are used respectively by fullers, for the fumigation of wool, and the preparation of lamp wicks (...evidently ...as we use it in matches). Sulphur was also used in religious ceremonies, and for fumigating houses, and for fumigating (bleaching) cloth. The virtues of sulphur are to be perceived in certain hot mineral springs, and there is no substance that ignites more readily, "a proof that there is in it a great affinity for fire.""
"His alchemical doctrine, that everything consisted of three elements—mercury, sulphur, and salt—is adapted from old authors, but he was the first to use the word "alcahest" to indicate the universal menstruum or , which at that time was a special object of research. He describes this liquor, alcahest, as having great power over the , comforting and confirming it, and preserving it from dropsy and other diseases that take their origin within it. ...Unhappily, he does not give precise directions for the preparation of this invaluable remedy."
"There are several ways of performing Tas'id, (a rising up) in the (the sublimatory apparatus), and the substances which the chemists sublime in it are Mercury, Arsenic sulfide, Sulfur and Sal-Amoniac. They are placed after treatment in the aludel, and the cover being fitted in position over it, a fire is lit. Then the substance rises up, and settles on the shelf..."
"After a visit to Germany, France, England, and the Scottish lead mines, Thurneysser started mining and sulphur-extracting in 1558..."
"All metals and minerals consist of certain principles. These were at first called "mercury" and "sulphur," not the ordinary substances... but a philosophical mercury and a philosophical sulphur."
"Traces of these ancient conceptions are still to be recognised in the word "quick-silver," that is living silver, a literal translation of argentum vivum. A term "quick-sulphur" (sulphur vivum) was also in use, but it has long since disappeared."
"Mercury, sulphur, and salt were not three matters, but one, derived from the '."
"[W]hen an alchemist converted a metal into its oxide, or, as they expressed it, "made a " of it, he thought he had volatilised its mercury and fixed its sulphur. When he distilled ordinary mercury and found a solid residue in the , he called it the "sulphur" of mercury; when he found a sublimed product in the receiver (mercury bichloride), he termed it the "mercury" of mercury or "corrosive sublimate.""
"They were thus able to apply the conception of the three principles to that of the four elements. Earth corresponded to philosophical sulphur, and water to philosophical mercury. Later, when they conceived philosophical salt, they devised a fifth element called "quintessence" or "ether." which corresponded to the third principle. Thus, if an alchemist distilled wood and obtained an inflammable gas, a liquid oil and a solid residue, he said that he had decomposed the wood into its elements—fire, water, and earth."
"The sulphur of a metal was its active principle; the mercury its passive; the salt was the link which united the other two."
"...let us rather choose Arm'd with Hell flames and fury all at once O're Heav'ns high Towrs to force resistless way, Turning our Tortures into horrid Arms Against the Torturer; when to meet the noise Of his Almighty Engin he shall hear Infernal Thunder, and for Lightning see Black fire and horror shot with equal rage Among his Angels; and his Throne it self Mixt with Tartarean Sulphur, and strange fire, His own invented Torments."
"He asserted that the metals are composed of the mercury and sulphur of the philosophers, to which he added philosophical salt. The philosopher's stone, he said, is composed of the same materials."
"He observed that the fumes of sulphur blacken ; he purified by means of arsenic and ; he made artificial rubies and other precious stones by tinting glass with metallic oxides; he described fluor spar as a flux for metals and their oxides; he oxidised sulphur with ; he knew that alcohol is obtained by distilling the fermented juice of sweet fruits; he proved that the acid extracted from and from ferrous sulphate (green vitriol) is the same as that obtained by burning sulphur with saltpetre, that is to say, it is sulphuric acid; and he discovered tin tetrachloride (stannic chloride), which is sometimes called Liquor fumans Libavii. It is a truly remarkable record of practical work, considering the age in which Libavius lived."
"He can perform a thousand things, and is the heart of all. He can perfect metals and minerals, impart understanding to animals, produce flowers in herbs and trees, corrupt and perfect air; in short, he produces all the odours and paints all the colors of the world. ...Know friend, that sulphur is the virtue of the world. And though Nature's second-born, yet the oldest of all things. To those who know him, however, he is as obedient as a little child. He is most easily recognized by the vital spirit in animals, the colour in metals, the odour in plants. Without his help his mother can do nothing."