At bottom there is but one subject of study: the forms and metamorphoses of mind. All other subjects may be reduced to that; all other studies bring us back to this study.

Nothing resembles pride so much as discouragement.

A man without passion is only a latent force, only a possibility, like a stone waiting for the blow from the iron to give forth sparks.

To feel keenly the poetry of a morning's roses, one has to have just escaped from the claws of this vulture which we call sickness.

Every man is a priest, even involuntarily; his conduct is an unspoken sermon, which is forever preaching to others.

To know how to suggest is the art of teaching.

Thought is a kind of opium; it can intoxicate us, while still broad awake; it can make transparent the mountains and everything that exists.