Technological progress has merely provided us with more efficient means for going backwards.

To achieve the impossible dream, try going to sleep.

From the moment I picked up your book until I laid it down, I was convulsed with laughter. Some day I intend reading it.

Facts do not cease to exist because they are ignored

We seem to have a compulsion these days to bury time capsules in order to give those people living in the next century or so some idea of what we are like. I have prepared one of my own. I have placed some rather large samples of dynamite, gunpowder, and nitroglycerin. My time capsule is set to go off in the year 3000. It will show them what we are really like.

It is not the mountain we conquer but ourselves.

The beginning of knowledge is the discovery of something we do not understand.

Happiness in intelligent people is the rarest thing I know.

But did thee feel the earth move?

Courage is grace under pressure.