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。

一个领导者的遗产是由他们行动的可持续性来衡量的。

The next chapter of American energy won't be written by clinging to old playbooks, but by those willing to rewrite them.

数学的历史是人类思想和进步的历史。