The investigation of nature is an infinite pasture-ground where all may graze, and where the more bite, the longer the grass grows, the sweeter is its flavor, and the more it nourishes.

Applied Science is a conjuror, whose bottomless hat yields impartially the softest of Angora rabbits and the most petrifying of Medusas.

Morality is always the product of terror; its chains and strait-waistcoats are fashioned by those who dare not trust others, because they dare not trust themselves, to walk in liberty.

Love casts out fear; but conversely fear casts out love. And not only love. Fear also casts out intelligence, casts out goodness, casts out all thought of beauty and truth.

Great is truth, but still greater, from a practical point of view, is silence about truth. By simply not mentioning certain subjects... totalitarian propagandists have influenced opinion much more effectively than they could have by the most eloquent denunciations.

Art, I suppose, is only for beginners, who have made up in their minds to be content with symbols rather than with what they signify, with the elegantly composed recipe in lieu of actual dinner.

The man who has successfully solved the problem of his relations with the two worlds of data and symbols is a man who has no beliefs. With regard to the problems of practical life he entertains a series of working hypotheses, which serve his purposes, but are taken no more seriously than any other kind of tool or instrument. In other words, symbols should never be raised to the rank of dogmas, nor should any system be regarded as more than a provisional convenience.