自然选择塑造了我们的思想，也塑造了我们的身体。

People can be really smart or have skills that are directly applicable, but if they don't really believe in it, then they are not going to really work hard.

有人问我什么是幸福，我回答说：不奢求非必需之物。

I never look back. I look forward to the next challenge.

唱歌是我与世界对话的方式。