世界通常不在海滩和乡村俱乐部里生活。

"Leadership is not about being in charge. It is about taking care of those in your charge."

理论物理学之于数学，犹如雕塑之于大理石块。

For the eyes of the world now look into space, to the moon and to the planets beyond, and we have vowed that we shall not see it governed by a hostile flag of conquest, but by a banner of freedom and peace.