Exercise invigorates the body and sharpens the mind.

In the end, science offers us the only way out of politics. And if we allow science to become politicized, then we are lost. We will enter the Internet version of the dark ages, an era of shifting fears and wild prejudices, transmitted to people who don't know any better.

Sometimes I look around my living room, and the most real thing in the room is the television. It's bright and vivid, and the rest of my life looks drab. So I turn the damn thing off. That does it every time. Get my life back.

Writing a book is a bit like going on location for a movie. You're absent from your life, your family, and your friends. You're psychologically gone, so you might as well be physically gone.

We think we know what we are doing. We have always thought so. We never seem to acknowledge that we have been wrong in the past, and so might be wrong in the future. Instead, each generation writes off earlier errors as the result of bad thinking by less able minds - and then confidently embarks on fresh errors of its own.

One of the most difficult things for a writer in this business to accept is the uncertain fate of one's work.

I eventually realized that direct experience is the most valuable experience I can have. Western man is so surrounded by ideas, so bombarded with opinions, concepts, and information structures of all sorts, that it becomes difficult to experience anything without the intervening filter of these structures.