““Me, I am convinced it is the truth,” said M. Bouc, becoming more and more enamoured of his theory.”

— Agatha Christie , book Murder on the Orient Express

Murder on the Orient Express (1934)

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Agatha Christie 320

English mystery and detective writer 1890–1976

Sabrina Ward Harrison (1975) Canadian writer

Quoted by Katherine Martin in Women of Courage: Inspiring Stories from the Women Who Lived Them, p. 269 (1999)

“First let me persuade you of my metaphysics and epistemology, then my theory of science, then my ethics and social theory, and then having done all that, I will convince you of my political theory. Over the past two decades, I have become convinced that this is a mug’s game… The reason Plato, Hobbes, Marx, Mill, and Rawls (many others could be named) garner widespread attention as political theorists has much more to do with their destinations than with their starting points.”

Ian Shapiro (1956) American political theorist

Shapiro, Ian. 2011. The Real World of Democratic Theory. Princeton University Press. p. 254; As cited in: Michael A. Fotos. Vincent Ostrom’s Revolutionary Science of Association http://www.indiana.edu/~workshop/colloquia/materials/papers/Fotos_VO's%20RevolutionaryScienceOfAssociation_15Mar2013.pdf, Lecturer in Political Science, Ethics, Politics, and Economics Yale University, New Haven CT : About Vincent Ostrom.

“I am not only convinced that what I say is false, but also that what one might say against it is false. Despite this, one must begin to talk about it. In such a case the truth lies not in the middle, but rather all around, like a sack, which, with each new opinion one stuffs into it, changes its form, and becomes more and more firm.”

Robert Musil (1880–1942) Austrian writer

Ich bin nicht nur überzeugt, dass das, was ich sage, falsch ist, sondern auch das, was man dagegen sagen wird. Trotzdem muss man anfangen, davon zu reden. Die Wahrheit liegt bei einem solchen Gegenstand nicht in der Mitte, sondern rundherum wie ein Sack, der mit jeder neuen Meinung, die man hineinstopft, seine Form ändert, aber immer fester wird!
Helpless Europe (1922)

“I am the truth, since I am part of what is real, but neither more nor less than those around me.”

Wallace Stevens (1879–1955) American poet

Source: The Necessary Angel: Essays on Reality and the Imagination

“Theories of what is true have their day. They come and go, leave their deposit in the common stock of knowledge, and are supplanted by other more convincing theories.”

Felix Adler (1851–1933) German American professor of political and social ethics, rationalist, and lecturer

Source: Founding Address (1876), The Religion of Duty (1905), Ch. 10
Context: Theories of what is true have their day. They come and go, leave their deposit in the common stock of knowledge, and are supplanted by other more convincing theories. The thinkers and investigators of the world are pledged to no special theory, but feel themselves free to search for the greater truth beyond the utmost limits of present knowledge. So likewise in the field of moral truth, it is our hope, that men in proportion as they grow more enlightened, will learn to hold their theories and their creeds more loosely, and will none the less, nay, rather all the more be devoted to the supreme end of practical righteousness to which all theories and creeds must be kept subservient.
There are two purposes then which we have in view: To secure in the moral and religious life perfect intellectual liberty, and at the same time to secure concert in action. There shall be no shackles upon the mind, no fetters imposed in early youth which the growing man or woman may feel prevented from shaking off, no barrier set up which daring thought may not transcend. And on the other hand there shall be unity of effort, the unity that comes of an end supremely prized and loved, the unity of earnest, morally aspiring persons, engaged in the conflict with moral evil.