You stay young as long as you can learn, acquire new habits, and suffer contradictions.

Only the thinking man lives his life, the thoughtless man's life passes him by.

It's bad enough when married people bore one another, but it's much worse when only one of them bores the other.

Nobody knows enough, but many know too much.

Morals refine manners, as manners refine morals.

Not reading a beautiful book again because you've already read it, that is, as if you were not visiting a dear friend again because you know him already.

He who says patience, says courage, endurance, strength.