I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.

Don't wait for permission to make a difference.

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。

如果你不做一些疯狂的事情，那么你就是在做错误的事情。