物理学的美丽在于它能够用最深刻的理论解释最简单的现象。
"Life is tough, and things don’t always work out well, but we should be brave and take risks. We shouldn’t hesitate to take the next step."
Every great advance in natural knowledge has involved the absolute rejection of authority.  
The speech we hear is an indication of that which we don't hear.
Writing is a way of talking without being interrupted.