“Common stock investors can make money by predicting the outcomes of practice evolution. You can’t derive this by fundamental analysis – you must think biologically.”

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

Three rules for a career: 1) Don’t sell anything you wouldn’t buy yourself; 2) Don’t work for anyone you don’t respect and admire; and 3) Work only with people you enjoy.

It’s stupid the way people extrapolate the past — and not slightly stupid, but massively stupid.

If the value of a company doesn’t just scream out at you, it’s too close.

It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be very intelligent.

How do you compete against a true fanatic? You can only try to build the best possible moat and continuously attempt to widen it.

We don’t like trading agony for money

This is a good life lesson: getting the right people into your system is the most important thing you can do.

I did not succeed in life by intelligence. I succeeded because I have a long attention span.

If you don’t keep learning, other people will pass you by. Temperament alone won’t do it – you need a lot of curiosity for a long, long time.

Our job is to find a few intelligent things to do, not to keep up with every damn thing in the world.

The game of life is the game of everlasting learning. At least it is if you want to win.

I don’t spend much time regretting the past, once I’ve taken my lesson from it. I don’t dwell on it.

It takes character to sit there with all that cash and do nothing. I didn’t get to where I am by going after mediocre opportunities.

The wise ones bet heavily when the world offers them that opportunity. They bet big when they have the odds. And the rest of the time, they don’t. It’s just that simple.

Any year that you don’t destroy one of your best-loved ideas is probably a wasted year.