Take from the philosopher the pleasure of being heard and his desire for knowledge ceases.
Jean-Jacques Rousseau

The fact is, every thinker, every philosopher, the moment he is forced to abandon his one-sided intellectual occupation by practical necessity, immediately returns to the general point of view of mankind.
Ernst Mach

The guiding motto in the life of every natural philosopher should be, seek simplicity and distrust it.
Alfred North Whitehead

The heart hid still in the dark, hard as the Philosopher's Stone.
Paul Celan

The impulse of the journalist is to be novel, yet to relate his curiosities to the urgencies of the moment; the philosopher seeks what he conceives to be true, regardless of the moment.
Daniel Bell

The man of science is a poor philosopher.
Albert Einstein

The man of science, the artist, the philosopher are attached to their nations as much as the day-laborer and the merchant.
Julien Benda

The most dangerous criminal now is the entirely lawless modern philosopher. Compared to him, burglars and bigamists are essentially moral men.
Gilbert K. Chesterton

The myth that John Locke was the philosopher behind the American Republic, is easily refuted by examining how Locke's philosophy steered Thomas Jefferson, for example.
Robert Trout

The philosopher creates, he doesn't reflect.
Gilles Deleuze

The philosopher has never killed any priests, whereas the priest has killed a great many philosophers.
Denis Diderot

The philosopher ought never to try to avoid the duty of making up his mind.
Mortimer Adler

The philosopher proves that the philosopher exists. The poet merely enjoys existence.
Wallace Stevens

The picture which the philosopher draws of the world is surely not one in which every stroke is necessitated by pure logic.
Morris Raphael Cohen

The theologian considers sin mainly as an offence against God; the moral philosopher as contrary to reasonableness.
Thomas Aquinas

The various modes of worship which prevailed in the Roman world were all considered by the people as equally true; by the philosopher as equally false; and by the magistrate as equally useful.
Edward Gibbon

There are few circumstances which so strongly distinguish the philosopher, as the calmness with which he can reply to criticisms he may think undeservedly severe.
Charles Babbage

There is nothing so absurd that some philosopher has not already said it.
Marcus Tullius Cicero

There is nothing so strange and so unbelievable that it has not been said by one philosopher or another.
Rene Descartes

There is only one thing a philosopher can be relied upon to do, and that is to contradict other philosophers.
William James