"The human heart is a mystery, even to itself."

国际政治是一项残酷而危险的业务，期望国家按照道德原则行事是愚蠢的。

当孩子被放在自然环境里，他会显示出自己的能力。

"A writer's duty is to illuminate the shadows, to give voice to the silenced."

最危险的风险是拒绝承担任何风险。

The architect must be a craftsman.

The world is always in movement.

I always had a personality that was a little bit different.

学习数学的最好方法就是去做数学。