Yellen’s comments suggest, and I agree, that we are in an asset bubble.

When friends and acquaintances are telling you [that] you are a genius, before you accept their opinion, take a moment to remember what you always thought of their opinions in the past.

Don't go in and tell somebody else how to run their business.

Now the guy that got to the top, the CEO, would obviously be stupid to have a number two guy who was a lot smarter than he is. So by definition, since he's a survivor and he got to the top and he isn't that brilliant, his number two guy is going to always be a little worse than he is. So, as time goes on, it's anti-Darwinism, the survival of the un- fittest.

Some people get rich studying artificial intelligence. Me, I make money studying natural stupidity.

You learn in this business.. If you want a friend, get a dog.

Had a nice conversation with Tim Cook today. Discussed my opinion that a larger buyback should be done now. We plan to speak again shortly.