幸福，就像不幸一样，是一个主动的选择。
Happiness， like unhappiness， is a proactive choice.
The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
The will is the central organizing force of mental life.
我相信讲故事的力量可以改变世界。
Leadership is not about giving orders; it's about inspiring others to achieve greatness.
We don't inherit the land from our ancestors; we borrow it from our children.
