幸福不是偶然发生的事情。它不是好运或随机机会的结果。它不是金钱可以买到或权力可以命令的东西。它不取决于你外部发生的事情，而取决于你内部发生的事情。

世界上最好和最美丽的东西是看不见甚至摸不到的——它们必须用心去感受。

好的科学既需要创造力，也需要纪律性。

A dreamer is one who can only find his way by moonlight, and his punishment is that he sees the dawn before the rest of the world.

"We live in time—it holds us and moulds us—but I’ve never felt I understood it very well."