Everybody lies about sex.

God created men to test the souls of women.

There are perhaps 5% of the population that simply can't think. There are another 5% who can, and do. The remaining 90% can think, but don't

By the data to date, there is only one animal in the Galaxy dangerous to man -- man himself. So he must supply his own indispensable competition. He has no enemy to help him.

I've found out why people laugh. They laugh because it hurts so much . . . because it's the only thing that'll make it stop hurting.

Never do today what you can put off till tomorrow if tomorrow might improve the odds.

If we blow ourselves up we will do it by misapplication of science; if we manage to keep from blowing ourselves up, it will be through intelligent application of science.