Perhaps without that adversity I might not have been able to preserve later on when my financial burdens were redoubled. I learned then how to keep problems from crushing me. I refused to worry about more than one thing at a time, and I would not let useless fretting about a problem, no matter how important, keep me from sleeping.

The world has entered a new era, evolving from an industrial into a knowledge-based society, and into a society that wants to live in harmony with nature.

[On the art of entrepreneurship] You're not going to get it free, and you have to take risks. I don't mean to be a daredevil, that's crazy. But you have to take risks, and in some cases you must go for broke.

A man who acquires the ability to take full possession of his own mind may take possession of anything else to which he is justly entitled.

Ignore the conventional wisdom. If everybody else is doing it one way, there's a good chance you can find your niche by going in exactly the opposite direction.

Excellence matters, and technology advances so fast that the potential for improvement is tremendous. So, since becoming CEO again, I've pushed hard to increase our velocity, improve our execution, and focus on the big bets that will make a difference in the world.