当爱不再存在时，你必须学会离开。

独裁统治的最佳武器是保密，但民主的最佳武器应该是开放的武器。

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

Mental life is a continuous adjustment to internal and external demands.

幸福的门户就在你内心。