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.

A state of true and universal tolerance is best ensured by leaving alone the peculiarities of men and peoples.

What is hardest of all? That which seems most simple: to see with your eyes what is before your eyes.

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

If all these devils really exist it proves there must be angels, too.

The best fortune that can fall to a man is that which corrects his defects and makes up for his failings.

A stated truth loses its grace, but a repeated error appears insipid and ridiculous.