Opposition is not necessarily enmity; it is merely misused and made an occasion for enmity.

When inspiration does not come to me, I go halfway to meet it.

Religion belonged to the infancy of humanity. Now that humanity had come of age, it should be left behind.

Knowledge is the intellectual manipulation of carefully verified observations.

The primitive stages can always be re-established; the primitive mind is, in the fullest meaning of the word, imperishable.

When a man has once brought himself to accept uncritically all the absurdities that religious doctrines put before him and even to overlook the contradictions between them, we need not be greatly suprised at the weakness of his intellect.

Writers write for fame, wealth, power and the love of women.