The greatest happiness of the thinking man is to have fathomed the fathomable, and to quietly revere the unfathomable.

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.

I am always glad to think that my education was, for the most part, informal, and had its roots in the soil.

The more personal you are, the more universal you become.

真相很少是纯粹的，也从不简单。