You've got to have models in your head and you've got to array you experience - both vicarious and direct - onto this latticework of mental models.

I never allow myself to have an opinion on anything that I don't know the other side's argument better than they do.

Darwin paid particular attention to disconfirming evidence. Objectivity maintenance routines are totally required in life if you're going to be a great thinker.

Everybody engaged in complex work needs colleagues. Just the discipline of having to put your thoughts in order with somebody else is a very useful thing.”

I don't think vengeance is much good.

You don't have to have perfect wisdom to get very rich - just a bit better than average over a long period of time.

Investing is where you find a few great companies and then sit on your ass.