How can one learn to know oneself? Never by introspection, rather by action.

Thank God when He lays a burden on thee, and thank Him when He takes it off.

Our passions are the true phoenixes; when the old one is burnt out, a new one rises from its ashes.

He is happiest, be he king or peasant, who finds peace in his home.

Since I have heard often enough that everyone in the end has his own religion, nothing seemed more natural to me than to fashion my own.

It is the great triumph of genius to make the common appear novel.

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.