Nothing is so irrevocable as mind.

I believe in general in a dualism between facts and the ideas of those facts in human heads.

The man who would emancipate art from discipline and reason is trying to elude rationality, not merely in art, but in all existence.

Philosophy may describe unreasoning, as it may describe force; it cannot hope to refute them.

A man's memory may almost become the art of continually varying and misrepresenting his past, according to his interest in the present.

In this world we must either institute conventional forms of expression or else pretend that we have nothing to express; the choice lies between a mask and a figleaf.

... even if Lucretius was wrong, and the soul is immortal, it is nevertheless steadily changing its interests and its possessions.Our lives are mortal if our soul is not; and the sentiment which reconciled Lucretius to death is as much needed if we are to face many deaths, as if we are to face only one.