世界是一本书，不旅行的人只读了一页。

经过不断改善自己的动作，幼儿从独立活动中获得喜悦。

I keep thinking about this river somewhere, with the water moving really fast. And these two people in the water, trying to hold onto each other, holding on as hard as they can, but in the end it’s just too much. The current’s too strong. They’ve got to let go, drift apart.

"Purpose gives meaning to mental activity."

When you solve a mathematical problem, you don't just get the answer - you understand why it's the answer.

In times of change, the ability to adapt quickly becomes your greatest competitive advantage.《The Energy Imperative》

You can't be wise and in love at the same time.