Don't criticise a hypothesis, come up with a better one.

Argument is meant to reveal the truth, not to create it.

We need both information and thinking. Information is no substitute for thinking and thinking is no substitute for information.

Happiness is for those who don't really need it. So I can live without happiness.

My thinking was taught to tribes in South Africa like the Zulus and Xhosas. At the time there were about 210 fights breaking out among them every month, but after they listened to my lessons, this fell to just four.

You cannot dig a hole in a different place by digging the same hole deeper

Humor is probably the most significant characteristics of the human mind. Far more significant than reason. In fact, reason is actually a very cheap commodity.