How many times has the end of the world been predicted? The same number of times the prediction has proved false.

The most mature human insight comes from one's introspection rather than from exterior research.

This country is a one-party country. Half of it is called Republican and half is called Democrat. It doesn't make any difference. All the really good ideas belong to the Libertarians.

A happy person is not a person in a certain set of circumstances, but rather a person with a certain set of attitudes.

To say, my fate is not tied to your fate, is like saying your end of the boat is sinking.

Life begins when you do.

How many times has the end of the world been predicted? The same number of times the prediction has proved false.