The defense of morals is the battle-cry which best rallies stupidity against change.

Life is the enjoyment of emotion, derived from the past and aimed at the future.

Rightness of limitation is essential for growth of reality.

Philosophy is the self-correction by consciousness of its own initial excess of subjectivity.

Mathematics as a science, commenced when first someone, probably a Greek, proved propositions about "any" things or about "some" things, without specifications of definite particular things.

[In many circumstances,] the most important thing about a proposition is not that it be true, but that it be interesting.

Everything of importance has been said before by somebody who did not discover it.