Opportunity cost is a huge filter in life. If you've got two suitors who are really eager to have you and one is way the hell better than the other, you do not have to spend much time with the other. And that's the way we filter out buying opportunities.

A lot of share-buying, not bargain-seeking, is designed to prop stock prices up. Thirty to 40 years ago, it was very profitable to look at companies that were aggressively buying their own shares. They were motivated simply to buy below what it was worth.

I try to get rid of people who always confidently answer questions about which they don't have any real knowledge.

Great investing requires a lot of delayed gratification.

We try more to profit from always remembering the obvious than from grasping the esoteric.

You'll better understand the evil when top audit firms started selling fraudulent tax shelters when I tell you that one told me that they're better [than the others] because they only sold [the schemes] to their top-20 clients, so no-one would notice.

Well, the questioner came from Singapore, which has perhaps the best economic record in the history of developing an economy. And therefore he referred to 15 percent per annum as modest. It's not modest, it's arrogant.