当你在一生中做某件事做得最好时，你真的不想放弃——对我来说，那就是网球。
When you do something best in life, you don’t really want to give that up – and for me it’s tennis.
Stories are light. Light is precious in a world so dark.
To truly understand the universe, we must first understand the limits of our understanding.
The psychologist must be a strict empiricist.