Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.

The laws of physics are the same everywhere in the universe, and that is a profound truth that connects us all.

"A story is a letter that the author writes to himself, but others are allowed to read."

Spend each day trying to be a little wiser than you were when you woke up.

Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

真相是脆弱的，容易被打破。

Tennis is a mental game. Everyone is fit, everyone hits great forehands and backhands – it’s the upstairs that counts.