数学中的每个问题都有解决方案；你只需要找到正确的路径。

Profit without purpose is empty; purpose without profit is unsustainable.

因此，生产的最终条件是生产条件的再生产。

It is not shame for a man to learn that which he knows not，whatever his age.

We don't inherit the land from our ancestors; we borrow it from our children.

Winning is not everything, but wanting to win is.

译文：每天都要纠正自己的过错。如果哪天没有发现过失，那就会自以为是；如果每天都觉得无过错，那就会寸步难进。天下聪明俊秀的人才不少，他们之所以不去努力地培养德行，扩大事业，是因为受了得过且过的思想影响，耽误终生。