基本物理现象中的偶然性并非由于我们对隐藏原因的无知，而是自然界的基本属性。

Never to suffer would never to have been blessed.

最小作用量原理是物理学的一个统一原理。

Spend each day trying to be a little wiser than you were when you woke up.Discharge your duties faithfully and well.Systematically you get ahead, but not necessarily in fast spurts...At the end of the day if you live long enough most people get what they deserve.

I have learnt how to live... how to be in the world and of the world, and not just to stand aside and watch.

Sometimes it seems as if there are more solutions than problems. On closer scrutiny, it turns out that many of today's problems are a result of yesterday's solutions.

世界是一本伟大的书，我们是其中的文字。