The Government of the United States is a definite Government, confined to specified objects. It is not like the state governments, whose powers are more general.

The heart of the educator must be a living flame, a fire that can ignite the souls of the young.

The complexity of viruses reminds us how much we still have to learn about biology.

战略的本质是你必须对想要完成的事情设定限制。

职业生涯是攀爬架，而不是梯子。

真正的领导力意味着用你的头脑和心灵做出艰难的决定。