We've done price elasticity studies, and the answer is always that we should raise prices. We don't do that, because we believe -- and we have to take this as an article of faith -- that by keeping our prices very, very low, we earn trust with customers over time, and that that actually does maximize free cash flow over the long term.

No matter what happens in life, be good to people. Being good to people is a wonderful legacy to leave behind.

"The only true wisdom is in knowing you know nothing."

It is remarkable that a science which began with the consideration of games of chance should have become the most important object of human knowledge.

The market is a reflection of human nature, and human nature never changes.