There are two primary choices in life: to accept conditions as they exist, or accept the responsibility for changing them.

Life would be tragic if it weren't funny.

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

People won't have time for you if you are always angry or complaining.

People who boast about their I.Q. are losers.

Intelligence without ambition is a bird without wings.

If you think we can't change the world, it just means you're not one of those what will.

My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.

We should seek the greatest value of our action.