Science is nothing more than a method of inquiry. The method says an assertion is valid - and will be universally accepted - only if it can be reproduced by others, and thereby independently verified. The impersonal rigor of the method has produced enormously powerful results for 400 years. The scientific method is utterly apolitical. A truth in science is verifiable whether you are black or white, male or female, old or young. It’s verifiable whether you know the experimenter, or whether you don’t.

When I sit down in front of a Windows machine, I can't write; when I sit down in front of my Mac, I can write. So I only use Macs.

Most areas of intellectual life have discovered the virtues of speculation, and have embraced them wildly. In academia, speculation is usually dignified as theory.

Personally, I don't deal much in theory. I have to deal with the facts. And on the basis of facts, I don't see much difference in the behavior of men and women.

I hadn't traveled with the intention of learning about anything except myself. And the real point of all this travel was not what I had come to believe or disbelieve about the wider world, but what I had learned about myself.

Keep working. Don't wait for inspiration. Work inspires inspiration. Keep working.

To apply general tools to specific problems is to fail.