The secret of change is to focus all of your energy, not on fighting the old, but on building the new.

Be as you wish to seem.

Ignorance, the root and stem of all evil.

Think good, and good follows. Think evil, and evil follows. You are what you think all day long.

I am not an Athenian or a Greek, but a citizen of the world.

Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.

Death may be the greatest of all human blessings.

An honest man is always a child.

If you can't explain it to a six year old, you don't understand it yourself.