If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.

最大的风险是不冒险。

在追求远大目标的过程中，要像完成最终目标那样去庆祝哪怕最微小的胜利。这样无论你最后可以走多远，你都是胜利的。