With the past, I have nothing to do; nor with the future. I live now.

Spurious prudence, making the senses final, is the god of sots and cowards, and is the subject of all comedy. It is nature's joke, and therefore literature's. True prudence limits this sensualism by admitting the knowledge of an internal and real world.

The age of puberty is a crisis in the age of man worth studying. It is the passage from the unconscious to the conscious; from thesleep of passions to their rage.

The wheels and springs of man are all set to the hypothesis of the permanence of nature. We are not built like a ship to be tossed, but like a house to stand.

Man was born to be rich, or to inevitably grow rich, by the use of his faculties: by the union of thought with nature.

Science is nothing but the finding of analogy, identity, in the most remote parts.

I feel some unwillingness to quit the remembrance of the past. With all the hope of the new I feel that we are leaving the old.