To be human is to be vulnerable.

数学直觉就像肌肉一样 - 通过锻炼会变得更强大。

The story is not in the plot; the plot is in the story.

Reason is， and ought only to be the slave of the passions， and can never pretend to any other office than to serve and obey them.

目标不是哀悼失去的未来，而是将它们用作未来斗争的资源。

国家的力量对于任何社会的成功都至关重要。