It is stupidity rather than courage to refuse to recognize danger when it is close upon you.

I am engaged in answering that Italian buffoon, Mazotti, whose views upon the larval development of the tropical termites have excited my derision and contempt . . .

My mind rebels at stagnation. Give me problems, give me work, give me the most abstruse cryptogram, or the most intricate analysis, and I am in my own proper atmosphere. But I abhor the dull routine of existence. I crave for mental exaltation.

Where there is no imagination there is no horror.

You know my methods. Apply them.

I have mastered the principles of several religions. They have all shocked me by the violence which I should have to do to my reason to accept the dogmas of any one of them.

It is the small men and not the great who hold their noses in the air.