The key to success is to keep going even when things seem impossible.

我们都在共同努力；这就是秘诀。

A man knows when he is growing old because he begins to look like his father.

在科学中最令人兴奋的短语，预示着新发现的，不是“我发现了！”，而是“这有点奇怪……”

幸福不能被追求；它必须随之而来。

The artist must be a translator of the invisible.

Mental phenomena are best understood in terms of their functions.