—— 请按键盘 空白键 开始游戏 ——

Whether you think you can or you think you can’t, you’re right.
Your self-worth is determined by you. You don't have to depend on someone telling you who you are.
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.
写作是面对沉默的一种方式。
Don't let the noise of others' opinions drown out your own inner voice.
The most profound discoveries in mathematics often come from the simplest observations.