With the fearful strain that is on me night and day, if I did not laugh I should die.

I know that I am intelligent, because I know that I know nothing.

I decided to sell my drawings. However, I didn't want people to buy my drawings because the professor of physics isn't supposed to be able to draw - isn't that wonderful - so I made up a false name.

When Britain and the U.S. invaded Iraq, it was with the reasonable expectation that it was going to increase the threat of terror, as it has.

Let us permit nature to have her way. She understands her business better than we do.