Great good nature without prudence is a great misfortune.

Nothing in the world is certain except for death and taxes.

Human happiness comes not from infrequent pieces of good fortune, but from the small improvements to daily life.

The man who does things makes mistakes, but he doesn't make the biggest mistake of all-doing nothing.

The Constitution only guarantees the American people the right to pursue happiness. You have to catch it yourself.

Let every one ascertain his special business and calling, and then stick to it if he wants to be successful.

When you speak to a man, look on his eyes; when he speaks to you, look on his mouth.