沉默是智者的语言。
Silence is the language of the wise.
发现可能性的极限的唯一方法就是超越它们进入不可能。
数学的美在于它如此简单却又如此强大。
Leadership is about making the tough decisions when no one else is willing to.
Darkness cannot drive out darkness: only light can do that. Hate cannot drive out hate: only love can do that.
我们必须在经济增长和环境管理之间取得平衡。