创新不仅仅是创造新事物；而是让现有的变得更好。

文化进化的研究必须考虑社会的内部动态和外部环境约束。

Tell your heart that the fear of suffering is worse than the suffering itself. And that no heart has ever suffered when it goes in search of its dreams, because every second of the search is a second's encounter with God and with eternity.

成功不是终点，失败也不是致命的，重要的是继续前进的勇气。

I want to liberate America, I want people to be proud of who they are.

最重要的是通过给予人们超出他们当前能力的任务来发展他们的能力。