Happiness is not about having more, but caring less.

Mathematics is not a spectator sport; you have to play to understand.

你可以是世界上最好、最多汁的桃子，但仍然会有人不喜欢桃子。

"The universe is a big place, perhaps the biggest."

When you do something best in life, you don’t really want to give that up – and for me it’s tennis.