Everything in science depends on what one calls an aperçu, on becoming aware of what is at the bottom of the phenomena. Such becoming aware is infinitely fertile.

There is nothing more frightful than for a teacher to know only what his scholars are intended to know.

True happiness springs from moderation.

If a poet would work politically, he must give himself up to a party; and so soon as he does that, he is lost as a poet.

The world only goes forward because of those who oppose it.

What do people mean when they talk about unhappiness? It is not so much unhappiness as impatience that from time to time possesses men, and then they choose to call themselves miserable.

Yet he who grasps the moment's gift, He is the proper man.