To every action there is always opposed an equal reaction； or， the mutual actions of two bodies upon each other are always equal， and directed to contrary parts.

"What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better."

不是缺乏爱，而是缺乏友谊使婚姻不幸福。

最好的文学提出问题而非提供答案。

You have to believe in yourself when no one else does.

"The boundary between the quantum and classical worlds is not a sharp line but a blurred transition where the rules of physics shift dramatically."

La memoria es como un espejo roto en mil pedazos, y sin embargo cada fragmento refleja la verdad entera.