模形式的算术是窥探宇宙隐藏结构的窗口。

We must build dikes of courage to hold back the flood of fear.

幸福不是现成的东西。它来自于你自己的行动。

Don't interfere with anything in the Constitution. That must be maintained, for it is the only safeguard of our liberties. And not to Democrats alone do I make this appeal, but to all who love these great and true principles.