Never expect women to be sincere, so long as they are educated to think that their first aim in life is to please.

To be content with little is difficult; to be content with much, impossible.

Deep learning doesn't shine.

To accept reason is impossible if you don't already possess it.

In youth we learn; in age we understand.

Old age transfigures or fossilizes.

Distrust your judgment the moment you can discern the shadow of a personal motive in it.