Many of the things that bring delight should not be owned. They are more enjoyed if another's, than if yours; the first day they give pleasure to the owner, but in all the rest to the others: what belongs to another rejoices doubly, because it is without the risk of going stale and with the satisfaction of freshness. . . the possession of things not only diminishes their enjoyment, but augments their annoyance, whether shared or not shared.

Life is a warfare against the malice of others.

The best skill at cards is knowing when to discard.

Quit while you're ahead. All the best gamblers do.

The heaven of the envied is hell for the envious. [...because they focus on what they don't have rather than being grateful for what they have, which is always better than some others.]

Wisdom and courage make mutual contributions to greatness.

A synonym is a word you use when you can't spell the other one.