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.

The very essence of the creative is its novelty, and hence we have no standard by which to judge it.

我们都是我们记忆的总和。

"The beauty of computational complexity lies in its ability to classify problems based on their inherent difficulty."