Tobias Dantzig (1884–1956) American mathematician
Henri Poincaré, Critic of Crisis: Reflections on His Universe of Discourse (1954), Ch. 2. The Age of Innocence
[Parameswaran, Uma, C.V. Raman: A Biography, http://books.google.com/books?id=RbgXRdnHkiAC, 2011, Penguin Books India, 978-0-14-306689-7] page=xiv
Tobias Dantzig (1884–1956) American mathematician
Henri Poincaré, Critic of Crisis: Reflections on His Universe of Discourse (1954), Ch. 2. The Age of Innocence
Bruce Caldwell (economist) (1952) economic historian
Source: Hayek's Challenge: An Intellectual Biography of F. A. Hayek (2004), Ch. 14 : Journey’s End—Hayek’s Multiple Legacies
Roger Bacon book Opus Tertium
Source: Opus Tertium, c. 1267, Ch. 14 as quoted in J. H. Bridges, The 'Opus Majus' of Roger Bacon (1900) Vol.1 http://books.google.com/books?id=6F0XAQAAMAAJ Preface pp.x-xi <br class="br">Context: All these foregoing sciences are, properly speaking, speculative. There is indeed in every science a practical side, as Avicenna teaches in the first book of his Art of Medicine. Nevertheless, of Moral Philosophy alone can it be said that it is in the special and autonomatic sense practical, dealing as it does with human conduct with reference to virtue and vice, beatitude and misery. All other sciences are called speculative: they are not concerned with the deeds of the present or future life affecting man's salvation or damnation. All procedures of art and of nature are directed to these moral actions, and exist on account of them. They are of no account except in that they help forward right action. Thus practical and operative sciences, as experimental alchemy and the rest, are regarded as speculative in reference to the operations with which moral or political science is concerned. This science is the mistress of every department of philosophy. It employs and controls them for the advantage of states and kingdoms. It directs the choice of men who are to study in sciences and arts for the common good. It orders all members of the state or kingdom so that none shall remain without his proper work.
Martin Buber (1878–1965) German Jewish Existentialist philosopher and theologian
Source: Between Man and Man (1965), p. 147
Hans Kelsen book Pure Theory of Law
Pure Theory of Law (revised ed., 1960), 7. Moral Norms as Social Norms
James Frazer book The Golden Bough
Source: The Golden Bough (1890), Chapter 4, Magic and Religion.
Context: From the earliest times man has been engaged in a search for general rules whereby to turn the order of natural phenomena to his own advantage, and in the long search he has scraped together a great hoard of such maxims, some of them golden and some of them mere dross. The true or golden rules constitute the body of applied science which we call the arts; the false are magic.
Susan Sontag (1933–2004) American writer and filmmaker, professor, and activist
"The Imagination of Disaster" from Against Interpretation and Other Essays (1966), p. 212
Against Interpretation and Other Essays (1966)