A clever person solves a problem. A wise person avoids it.

I like your Christ. I do not like your Christians. Your Christians are so unlike your Christ.

Speak only if it improves upon the silence.

Live as if you were to die tomorrow. Learn as if you were to live forever.

Coincidence is God's way of remaining anonymous.

Try to become not a man of success, but try rather to become a man of value.

The world is a dangerous place to live, not because of the people who are evil, but because of the people who don't do anything about it.

There are many causes I would die for. There is not a single cause I would kill for.

Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution.

You should be the change that you want to see in the world.

Knowledge will give you power, but character, respect.

It does not matter how slowly you go so long as you do not stop.

Superman don't need no seat belt. Comment to a flight attendant, who replied: "Superman don't need no airplane, either."

A quick temper will make a fool of you soon enough.

What we learn from history is that no one learns from history.