Once you get into debt, it’s hell to get out. Don’t let credit card debt carry over. You can’t get ahead paying eighteen percent.

In the corporate world, if you have analysts, due diligence, and no horse sense, you've just described hell.

We look for a horse with one chance in two of winning and which pays you three to one.

The name of the game is continuing to learn. Even if you're very well trained and have some natural aptitude, you still need to keep learning.

Black-Scholes works for short-term options, but if it's a long-term option and you think you know something [about the underlying asset], it's insane to use Black-Scholes.

Failure to handle psychological denial is a common way for people to go broke: you have made an enormous commitment to something. You have poured effort and money in. And the more you put in, the more that the whole consistency principle makes you think, "Now it has to work. If I put in just a little more, then it will work."

Warren spends 70 hours a week thinking about investing .