Experimentation is the least arrogant method of gaining knowledge. The experimenter humbly asks a question of nature.

All sorts of computer errors are now turning up. You'd be surprised to know the number of doctors who claim they are treating pregnant men.

The essential building block is...the true love that is impossible to define for those who have never experienced it and unnecessary to define for those who have.

They won't listen. Do you know why? Because they have certain fixed notions about the past. Any change would be blasphemy in their eyes, even if it were the truth. They don't want the truth; they want their traditions.

I don't believe in personal immortality; the only way I expect to have some version of such a thing is through my books.

It is no defense of superstition and pseudoscience to say that it brings solace and comfort to people. . . . If solace and comfort are how we judge the worth of something, then consider that tobacco brings solace and comfort to smokers; alcohol brings it to drinkers; drugs of all kinds bring it to addicts; the fall of cards and the run of horses bring it to gamblers; cruelty and violence bring it to sociopaths. Judge by solace and comfort only and there is no behavior we ought to interfere with.

They absorb carbon monoxide and carbon dioxide and give out oxygen. What could be more desirable? And they look good in the bargain. Stop chopping down the rain forests and plant more saplings, and we're on our way.