The true test of leadership is not what you do when you're being watched, but what you do when you're alone.

永远保持节俭，除非是为了自己的热情。

即使你不完美，你也是限量版。

The power of mathematics lies in its generality and abstraction.

试管婴儿的未来是使其更简单、更安全、更易于获得。