Nothing will come of nothing.

Ambition leads me not only farther than any other man has been before me, but as far as I think it possible for man to go.

生命太短暂，不要在早晨醒来时带着遗憾。

我在数学上花的时间越多，我就越兴奋。

"We are all just walking each other home."

接种天花变得不再必要。