A bad manner spoils everything, even reason and justice; a good one supplies everything, gilds a No, sweetens a truth, and adds a touch of beauty to old age itself.
A sage has one advantage; he is immortal. If this is not his century, many others will be.
There is always time to add a word, never to withdraw one.
True knowledge lies in knowing how to live.
He that has satisfied his thirst turns his back on the well.
Advice is sometimes transmitted more successfully through a joke than grave teaching.