It takes a good deal of character to judge a person by his future instead of his past

The religions are obsolete when the reforms do not proceed from them.

Whenever a true theory appears, it will be its own evidence. Its test is, that it will explain all phenomena.

A man is relieved and gay when he has put his heart into his work and done his best; but what he has said or done otherwise shall give him no peace.

Sleep takes off the costume of circumstance, arms us with terrible freedom, so that every will rushes to a deed.

An expense of ends to means is fate;Morganization tyrannizing over character. The menagerie, or forms and powers of the spine, is a book of fate: the bill of the bird, the skull of the snake, determines tyrannically its limits.

Every vice is only an exaggeration of a necessary and virtuous function.