Man is always something more than what he knows of himself. He is not what he is simply once and for all, but is a process.

Every man has a property in his own person. This nobody has a right to, but himself.

把你的手放在滚热的炉子上一分钟，感觉起来像一小时。坐在一个漂亮姑娘身边整整一小时，感觉起来像一分钟。这就是相对论。

Improve yourself through reflection.