Adding more people causes problems. But people are also the means to solve these problems. The main fuel to speed the world’s progress is our stock of knowledge; the brakes are our lack of imagination and unsound social regulations of these activities. The ultimate resource is people—especially skilled, spirited, and hopeful young people endowed with liberty—who will exert their wills and imaginations for their own benefits, and so inevitably they will benefit the rest of us as well.

There is only one important resource which has shown a trend of increasing scarcity rather than increasing abundance. That resource is the most important of all—human beings. . . . [An] increase in the price of peoples’ services is a clear indication that people are becoming more scarce even though there are more of us.

Human beings create more than they destroy.

Letting the religious right teach ID in schools is like letting the Marines teach poetry in advanced combat training. As a scientist, I see these the relevancy between the two sets to be equal. If Kansas is going to mess up like this, the least it can do is not be hypocritical and allow equal time for other alternative "theories" like FSMism, which is by far the tastier choice.

All of us necessarily hold many casual opinions that are ludicrously wrong simply because life is far too short for us to think through even a small fraction of the topics that we come across.

The main fuel to speed the world's progress is our stock of knowledge, and the brake is our lack of imagination.

The world's problem is not too many people, but lack of political and economic freedom.