Experience demands that man is the only animal which devours his own kind, for I can apply no milder term to the general prey of the rich on the poor.

Walking is the best possible exercise. Habituate yourself to walk very fast.

While wading through the whimsies, the puerilities, and unintelligible jargon of this work [Plato's Republic], I laid it down often to ask myself how it could have been that the world should have so long consented to give reputation to such nonsense as this?

Never spend your money before you have earned it.

It is neither wealth nor splendor; but tranquillity and occupation which give happiness.

My only fear is that I may live too long. This would be a subject of dread to me.

Take not from the mouth of labor the bread it as earned.

Friendship is but another name for an alliance with the follies and the misfortunes of others. Our own share of miseries is sufficient: why enter then as volunteers into those of another?

To myself, personally, it brings nothing but increasing drudgery and daily loss of friends.

Information is the currency of democracy.