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April 10, 2026
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"Let Q... be the quantity of heat which must be imparted to a body during its passage... from one condition to another, any heat withdrawn from the body being... [a] negative quantity... Q may be divided into three parts... the first... in increasing the heat... in the body, the second in producing the interior [work]... the third in producing the exterior work. ...[T]he second ...[and] first... together... represented by... function U... [are] completely determined by the initial and final states of the body. The third part... the equivalent of exterior work, can, like this work itself, only be determined when the precise manner in which the changes of condition took place is known. If W be the quantity of exterior work, and A the equivalent of heat for the unit of work, the value of the third part will be A ¡ W, and the first fundamental theorem will be..."
"My memoirs "On the Mechanical Theory of Heat" are of different kinds. Some are devoted to the development of the general theory and to the application thereof to those properties of bodies which are usually treated of in the doctrine of heat. Others have reference to the application of the mechanical theory of heat to electricity. ...Other memoirs... have reference to the conceptions I have formed of the molecular motions which we call heat. These conceptions, however, have no necessary connexion with the general theory, the latter being based solely on certain principles which may be accepted without adopting any particular view as to the nature of molecular motions. I have therefore kept the consideration of molecular motions quite distinct from the exposition of the general theory."
"Wurm, der ich bin, von Leidenschaften zerfressen, der Selbstsucht zum KĂśder hingeworfen, soll ich dennoch den Menschen lieben. Wenn ich dies kann, und sofern ich dies kann, kann ich auch Gott lieben."
"Only the idea of God gives me the confidence that morality will become reality on earth. And because I cannot live without this confidence, I cannot live without God."
"Love of God implies love of religion. And religion exemplifies that creative spirit of God which is at work in history as well as in the mind of man. Thus, one ought to love any religion, that is, religion as such, and in any form—as a manifestation of the moral spirit, the divine spirit of mankind."
"An dem Armen geht mir der Mensch auf. Daher kann ich den Menschen nicht denken ohne das Mitleid mit ihm, ohne die Liebe zu ihm. Nicht das Universum, aber das sittliche Universum, das soziale Dasein der Menschen muĂ ich denken und lieben, wenn mein Denken Gottes: Liebe heiĂen darf."
"Unter dieser Beleuchtung entsteht mir der Gott, der der Beistand des Armen ist und sein Rächer in der Weltgeschichte. Diesen Rächer der Armen liebe ich."
"Wherever rights are denied the poor, the prophetic anger is turned not merely against the incumbent rulers but equally against the means society employs to gloss over its own mendacity. And foremost among these means is art. Catering to luxury and emphasizing only the beautiful, art denies the fact that wretchedness and destitution have a tight grip on the poor. This is the reason why the prophetic zeal turned against art, and not merely against the luxury of women and the pretentiousness of the rich."
"Ethics must not remain a lovely abstraction; it must be concretized into valid truth. At this point ethics joins forces with religion because ethics too has ultimately no other recourse but to hypothesize the idea of God: not for the personal redemption of the moral individual but as a guarantee for the eventual realization of morality in this world."
"Man's hope is transformed into faith when he no longer thinks of himself alone, that is, of his salvation here and now, or of his eternal salvation (the latter, if I may say so, with calculating sanctimoniousness). Hope is transformed into faith when man associates the future with the emergence of a community whose concerns will reach beyond its everyday concrete reality. Such a community will not be composed merely of man's immediate circle of friends or family nor will it include only those who share his own cherished beliefs; indeed, it will even cut across the borders of his own country because it will represent the community of mankind."
"As faith in mankind, Israel's faith is hope. And it is this epitome of Israel's prophetism, this hope in mankind's future, that comprises the substance of the messianic idea."
"Wenn ich Gott liebe, so liebe ich nicht pantheistisch das Universum, nicht die Tiere, die Bäume und die Kräuter, als meine MitgeschÜpfe, sondern aber ich liebe in Gott einseitig den Vater der Menschen, und diese hÜhere Bedeutung und diese soziale Prägnanz hat nunmehr der religiÜse Terminus von Gott alsVater: er ist nicht sowohl der SchÜpfer und Urheber, sondern vielmehr der Schutz und Beistand der Armen."
"Even the sharpest problem focus cannot help but sharpen the problem."
"One of the scientists who had discovered the failure of the Planck-Wien law, Ferdinand Kurlbaum, was scheduled to speak first that night. A friend and close colleague of Planckâs, Kurlbaum had no plan to attack Planckâs theory on mathematical or logical grounds. Planck after all was the worldâs greatest expert on this topic and universally respected for his deep understanding of thermodynamics (the physics of heat flow and energy). Kurlbaum would simply present the hard data he and his collaborator, Henrich Rubens, had painstakingly collected to test the predictions of the PlanckWien theory. The data would show (to quote Richard Feynman) that âNature had a different way of doing things.â"
"Here I need not go into the paradoxes and mysteries of KabbalisÂtic theology concerned with the seflroth and their nature. But one important point must be made. The process which the Kabbalists described as the emanation of divine energy and divine light was also characterized as the unfolding of the divine language. This gives rise to a deep-seated parallelism between the two most imÂportant kinds of symbolism used by the Kabbalists to communiÂcate their ideas. They speak of attributes and of spheres of light; but in the same context they speak also of divine names and the letters of which they are composed. From the very beginnings of Kabbalistic doctrine these two manners of speaking appear side by side. The secret world of the godhead is a world of language, a world of divine names that unfold in accordance with a law of their own. The elements of the divine language appear as the letters of the Holy Scriptures. Letters and names are not only conventional means of communication. They are far more. Each one of them represents a concentration of energy and expresses a wealth of meaning which cannot be translated, or not fully at least, into human language. There is, of course, an obvious disÂcrepancy between the two symbolisms. When the Kabbalists speak of divine attributes and sefiroth, they are describing the hidÂden world under ten aspects; when, on the other hand, they speak of divine names and letters, they necessarily operate' with the twenty-two consonants of the Hebrew alphabet, in which the Torah is written, or as they would have said, in which its secret essence was made communicable."
"Scholem ⌠says that Jewish mystics have always tried to project their own thought into the biblical texts; as a matter of fact, every unexpressible reading of a symbolic machinery depends on such a projective attitude. ⌠For the Kabalist, the fact that God expresses Himself, even though His utterances are beyond any human insight, is more important than any specific and coded meaning His words can convey."
"itâs horrifying that people who helped pave the way toward where we are are still in leadership positions. So the reckoning I see is this fissure. I think of Gershom Scholemâs On Jews and Judaism in Crisis. The subtitle of my book â Comics on Crisis in America and Israel â is a nod to his reference to crisis."
"We shall start from the assumption that a mystic, insofar as he participates actively in the religious life of a community, does not act in the void. It is sometimes said, to be sure, that mystics, with their personal striving for transcendence, live outside of and above the historical level, that their experience is unrelated to historical experience. Some admire this ahistorical orientation, others condemn it as a fundamental weakness of mysÂticism. Be that as it may, what is of interest to the history of reliÂgions is the mystic's impact on the historical world, his conflict with the religious life of his day and with his community. No hisÂtorian can say â nor is it his business to answer such questions whether a given mystic in the course of his individual religious experience actually found what he was so eagerly looking for. What concerns us here is not the mystic's inner fulfillment. But if we wish to understand the specific tension that often prevailed between mysticism and religious authority, we shall do well to recall certain basic facts concerning mysticism. A mystic is a man who has been favored with an immediate, and to him real, experience of the divine, of ultimate reality, or who at least strives to attain such experience. His experience may come to him through sudden illumination, or it may be the result of long and often elaborate preparations. From a historical point of view, the mystical quest for the divine takes place almost exclusively wit a prescribed tradition-the exceptions seem to be limited to modern times, with their dissolution of all traditional ties. Where such a tradition prevails, a religious authority, established long before the mystic was born, has been recognized by the com munity for many generations."
"The Kabbalah, literally 'tradition,' that is, the tradition of things divine, is the sum of Jewish mysticism. It has had a long history and for centuries has exerted a profound influence on those among the Jewish people who were eager to gain a deeper understanding of the traditional forms and conceptions of Judaism. The literary production of the Kabbalists, more intensive in certain periods than in others, has been stored up in an impressive number of books, many of them dating back to the late Middle Ages. For many centuries the chief literary work of this movement, the Zohar, or 'Book of Splendor,' was widely revered as a sacred text of unquestionable value, and in certain Jewish communities it enjoys such esteem to this day."
"No one has a right to speak who, in the midst of thinking, hasn't been overcome with the experience of glimpsing the essence of history."
"[My aim is] to design logic as a calculating discipline, especially to give access to the exact handling of relative concepts, and, from then on, by emancipation from the routine claims of natural language, to withdraw any fertile soil from "clichĂŠ" in the field of philosophy as well. This should prepare the ground for a scientific universal language that, widely differing from linguistic efforts like VolapĂźk [a universal language like Esperanto, very popular in Germany at the time], looks more like a sign language than like a sound language."
"When I started to trace the later development of logic, the first thing I did was to look at SchrĂśder's Vorlesungen Ăźber die Algebra der Logik, ...[whose] third volume is on the logic of relations (Algebra und Logik der Relative, 1895). The three volumes immediately became the best-known advanced logic text, and embody what any mathematician interested in the study of logic should have known, or at least have been acquainted with, in the 1890s. While, to my knowledge, no one except Frege ever published a single paper in Frege's notation, many famous logicians adopted Peirce-SchrĂśder notation, and famous results and systems were published in it. LĂśwenheim stated and proved the LĂśwenheim theorem (later reproved and strengthened by Thoralf Skolem, whose name became attached to it together with LĂśwenheim's) in Peircian notation. In fact, there is no reference in LĂśwenheim's paper to any logic other than Peirce's. To cite another example, Zermelo presented his axioms for set theory in Peirce-SchrĂśder notation, and not, as one might have expected, in Russell-Whitehead notation."
"Western civilisation, with its own spirituality, has permeated all corners of the earth. My thesis is that this is the spirituality of money."
"Rescher's work envisions a dialectical tension between our synoptic aspirations for useful knowledge and our human limitations as finite inquirers. The elaboration of this project represents a many-sided approach to fundamental philosophical issues that weaves together threads of thought from the philosophy of science, and from continental idealism and American pragmatism."
"I have never thought for a moment that if you cannot say it with numbers that it just is not worth saying. But all the same, I do firmly believe that where you cannot put numbers to work you will understand the matter better and more clearly for being able to explain why."
"Leibniz ... envisioned real possibility in terms rooted in axiological considerations of evaluative optimality. To be sure, it is clear that one cannot just optimize. ... One has to optimize something, some feature or aspect of things. And if this factor is to be something that is qualified, be accepted as self-validating and self-sustaining, then the clearly most promising candidate would seem to be intelligence itself. ... The value at issue here with "being for the best" is a matter of being so as intelligent creatures see it—that is from the vantage point of intelligence itself. Assuredly, no intelligent being would prefer an alternative that is inferior in this regard. And so, for an intelligent being—a rational creature—intelligence itself must figure high on the scale of values."
"Italians dream that the ECB (European Central Bank) will make their life easier than the Bundesbank does now... The new central bank is certain to establish itself at the outset as a direct continuation of the German central bank."
"If there was ever a bad idea, EMU it is."
"On my first trip to Chile, I went to the ministry of finance to meet with the minister and the deputy minister, and behind the deputy's desk were two photos -- one of Chile's president and the other of Rudi."
"The most serious criticism of EMU is that by abandoning exchange rate adjustments it transfers to the labor market the task of adjusting for competitiveness and relative prices... losses in output and employment (and pressure on the European central bank to inflate) will predominate."
"The model retains the uncomfortable property that any increase in demand for home output ... leads to nominal and real appreciation... The uncomfortable fact remains that even in this model there is a short-run tendency for an expenditure increase to induce an appreciation... Expansionary fiscal policy will lead to an initial depreciation of the nominal and real exchange rate if ... (it) is accommodated by an expansion in nominal money."
"The most likely scenario is that EMU (Economic and Monetary Union of the European Union) will occur but will neither end Europeâs currency troubles nor solve its prosperity problems."
"Once Italy is in, with an appreciated currency, the country will soon be back on the ropes, just as in 1992, when the currency came under attack."
"The crisis takes a much longer time coming than you think, and then it happens much faster than you would have thought."
"The paper develops a simple macroeconomic framework for the study of exchange rate movements. The purpose is to develop a theory that is suggestive of the observed large fluctuations in exchange rates while at the same time establishing that such exchange rate movements are consistent with rational expectations formation. In developing a formal model we draw on the role of asset markets, capital mobility, and expectations that have been emphasized in recent literature."
"In figure 3 we show the money and domestic asset market equilibrium schedules for given stocks of each of the assets. Along MM the domestic money market is in equilibrium. Higher interest rates reduce money demand so that equilibrium requires a depreciation and thus a rise in the domestic currency value of foreign assets and - hence wealth. The exchange rate thus plays a balancing role by affecting the valuation of assets."
"Monetary policy affects the ... of goods and assets and (iii) effects through changes in explicit or implicit real interest rates on aggregate demand."
"The excursus upon the origin of Odysseusâ scar is not basically different from the many passages in which a newly introduced character, or even a newly appearing object or implement, though it be in the thick of a battle, is described as to its nature and origin; or in which, upon the appearance of a god, we are told where he last was, what he was doing there, and by what road he reached the scene; indeed, even the Homeric epithets seem to me in the final analysis to be traceable to the same need for an externalization of phenomena in terms perceptible to the senses. Here is the scar, which comes up in the course of the narrative; and Homerâs feeling simply will not permit him to see it appear out of the darkness of an unilluminated past; it must be set in full light, and with it a portion of the heroâs boyhood. ⌠To be sure, the aesthetic effect thus produced was soon noticed and thereafter consciously sought; but the more original cause must have lain in the basic impulse of the Homeric style: to represent phenomena in a fully externalized form, visible and palpable in all their parts, and completely fixed in their spatial and temporal relations. Nor do psychological processes receive any other treatment: here too nothing must remain hidden and unexpressed. With the utmost fullness, with an orderliness which even passion does not disturb, Homerâs personages vent their inmost hearts in speech; what they do not say to others, they speak in their own minds, so that the reader is informed of it. Much that is terrible takes place in the Homeric poems, but it seldom takes place wordlessly: Polyphemus talks to Odysseus; Odysseus talks to the suitors when he begins to kill them; Hector and Achilles talk at length, before battle and after; and no speech is so filled with anger or scorn that the particles which express logical and grammatical connections are lacking or out of place."
"[It] would have been all the easier [if] the entire story of the scar had been presented as a recollection which awakens in Odysseusâ mind at this particular moment. It would have been perfectly easy to do; the story of the scar had only to be inserted two verses earlier, at the first mention of the word scar, where the motifs âOdysseusâ and ârecollectionâ were already at hand. But any such subjectivisticâperspectivistic procedure, creating a foreground and background, resulting in the present lying open to the depths of the past, is entirely foreign to the Homeric style; the Homeric style knows only a foreground, only a uniformly illuminated, uniformly objective present."
"The genius of the Homeric style becomes even more apparent when it is compared with an equally ancient and equally epic style ⌠God, in order to speak to Abraham, must come from somewhere, must enter the earthly realm from some unknown heights or depths. Whence does he come, whence does he call to Abraham? We are not told. He does not come, like Zeus or Poseidon, from the Aethiopians, where he has been enjoying a sacrificial feast. Nor are we told anything of his reasons for tempting Abraham so terribly. He has not, like Zeus, discussed them in set speeches with other gods gathered in council; nor have the deliberations in his own heart been presented to us; unexpected and mysterious, he enters the scene from some unknown height or depth and calls: Abraham! It will at once be said that this is to be explained by the particular concept of God which the Jews held and which was wholly different from that of the Greeks. True enoughâbut this constitutes no objection. For how is the Jewish concept of God to be explained? Even their earlier God of the desert was not fixed in form and content, and was alone; his lack of form, his lack of local habitation, his singleness, was in the end not only maintained but developed even further in competition with the comparatively far more manifest gods of the surrounding Near Eastern world. The concept of God held by the Jews is less a cause than a symptom of their manner of comprehending and representing things."
"The digressions [in Homer] are not meant to keep the reader in suspense ... An episode that will increase suspense by retarding the action must be so constructed that it will not fill the present entirely, will not put the crisis, whose resolution is being awaited, entirely out of the readerâs mind, and thereby destroy the mood of suspense; the crisis and the suspense must continue, must remain vibrant in the background. But Homerâand to this we shall have to return laterâknows no background. What he narrates is for the time being the only present, and fills both the stage and the readerâs mind completely."
"Many reviewers have ascribed to the book, in praise or blame, tendencies that were far removed from me: that the method of the book is sociological, even that the tendency was socialist; that it is focused all too much on the Middle Ages, but also the opposite: it is antimedieval and anti-Christian; that it is wholly pro-Romance, especially pro-French, neglects German, is unjust toward German literature. But there have also been patriotic readers who have congratulated me on the observation that the tragic in the Hildebrandslied and in the Nibelungenlied is deeper than that of Roland. One reviewer concluded on the basis of the first paragraph of the Roland chapter that I am an enlightened pacifist."
"In the Old Testament stories, ⌠the sublime influence of God here reaches so deeply into the everyday that the two realms of the sublime and the everyday are not only actually unseparated but basically inseparable."
""Epilegomena to Mimesis", trans. Jan Ziolkowski, in Mimesis: The Representation of Reality in Western Literature, 50th anniversary edition, Princeton, NJ: Princeton University Press, 2003 (reprinted 2013), p. 570"
"A scene like Peter's denial fits into no antique genre. It is too serious for comedy, too contemporary and everyday for tragedy, politically too insignificant for historyâand the form which was given it is one of such immediacy that its like does not exist in the literature of antiquity."
"[The Passion story] completely destroys the aesthetics of the separation of styles; it engenders a new elevated style, which does not scorn everyday life and which is ready to absorb the sensory realistic, even the ugly, the undignified, the physically base. Orâif anyone prefers to have it the other way aroundâa new sermo humilis is born, a low style, such as would properly only be applicable to comedy, but which now reaches out far beyond its original domain, and encroaches upon the deepest and the highest, the sublime and the eternal."
"In its resistance to the great attack on traditional dogma launched by the Enlightenment, the Protestant theology of the 19th century ⌠had very largely agreed in taking up a defensive position in which the truth of Christian faith was to be proved by demonstrating the indispensability of religious feeling to all higher humanity. ⌠Yet on this basis it was not possible to refute the contention of Ludwig Feuerbach that the secret of theology is anthropology. ⌠The secret of God was in truth that of self-glorifying man speaking of God and extolling his own divinity."
"The non-Christian can put no question which is not necessarily that of the Christian dogmatician as well. ... In solidarity with the non-Christian, he has no prior knowledge. He must begin from the very beginning with no presupposed consciousness of God. He must learn to spell out the message which comes to him as to every man."
"The attack and claim which are so unmistakable in the New Testament were muted and neutralized by the official recognition, the cultural integration and the social control of Christianity as a middle-class institution."
"Over this period many issues have been clarified. Today we know very much more about these twenty-seven short writings from a little religious sub-culture in the Roman empire than ever before. Nevertheless, they risk being forgotten - partly because the link with the Christian history which they have influenced has been broken, partly because many of our educated contemporaries come from other religious and cultural traditions, and partly because the results of historical-critical research are so complex that many people are deterred from trying to grasp them."