接种天花变得不再必要。

环境不是刺激的马赛克，而是一个力场，其中每个部分都与其他部分动态相关。

爱是一种力量，它能让我们在最黑暗的时刻找到光明。

You can't manage what you don't measure.

我对成为历史上最好的不感兴趣。我感兴趣的是尽我所能做到最好。

When you are young, you think you will be happy when you are older. But then you get older and you realize you were happy when you were young.

真正的音乐来自于内心，而不是技巧。