This is The Tonight Show. I can't tell you too much about it, other than the fact that this program is going to go on forever.

I'm all for sex. Seven nights a week. Days, too.

Sometimes things which at the moment may be perceived as obstacles-and actually be obstacles, difficulties, or drawbacks-can in the long run result in some good end which would not have occurred if it had not been for the obstacle.

In a rational society we would want our presidents to be teachers. In our actual society we insist they be cheerleaders.

If the Old Testament were a reliable guide in the matter of capital punishment, half the people in the United States would have to be killed tomorrow.

Religious believers of the world, you are free to continue to debate the simple, narrow question that divides you from atheists, but you have no right, in so doing, to treat the Humanists of the world with contempt. You owe them a deep debt of gratitude, for not only have they shed much light on a naturally dark world but they have very probably helped civilize your own specific religion.

Dark energy is perhaps the biggest mystery in physics.