The whole art of teaching is only the art of awakening the natural curiosity of young minds for the purpose of satisfying it afterwards.

The duty of literature is to note what counts, and to light up what is suited to the light. If it ceases to choose and to love, it becomes like a woman who gives herself without preference.

Universal peace will be realized, not because man will become better, but because a new order of things, a new science, new economic necessities, will impose peace.

Good angels are fallible ... they sin every day and fall from Heaven like flies.

Ignorance and error are necessary to life, like bread and water.

You learn to speak by speaking, to study by studying, to run by running, to work by working; in just the same way, you learn to love by loving.

Chance is perhaps the pseudonym of God when he did not want to sign.