I'm the luckiest guy in the world in terms of what I do for a living. No one can tell me to do things I don't believe in or things I think are stupid.
Good big decisions do not take time at all, if they do you are in trouble.
Always associate yourself with people who are better than you.
It makes a difference who the treasury secretary is.
Focus alone is not enough; putting in the time to commit is also crucial to achieve success.
The most important thing in terms of your circle of competence is not how large the area of it is, but how well you've defined the perimeter.