I don't compete with anyone but myself.

大海不在乎你的计划。

The essence of creativity is figuring out how to use what you already know in order to go beyond what you already think.

The advancement of mathematics is through the continuous questioning of established truths.

Failure is interesting — it’s part of making progress. You never learn from success, but you do learn from failure.

质量不是命运；它是一种选择。

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.