在困难时刻，我们不是被环境定义，而是被我们的反应定义。

I’m not afraid of falling, I’m afraid of the fear of falling.

Certification standards are meaningless without rigorous enforcement and transparency.

If the people cannot trust their government to do the job for which it exists - to protect them and to promote their common welfare - all else is lost.

I don't count my sit-ups. I only start counting when it starts hurting.

一本书是一个花园，一个果园，一个仓库，一场聚会，一路上的伙伴，一位顾问，众多的顾问。

I don’t like to do easy things. I like to do things that are challenging and that push me.

有时最简单的问题会引出最深奥的理论。