Mathematics is the art of giving the same name to different things.

译文：天上的风云变化无常，不可预测，人间的事情难以估量，大多互相抵触。赏析：很多事情很难得到别人的认同和理解，只要我们问心无愧，行得正，不一定要在乎别人的言辞和态度。

The only way to achieve long-term success is to create real value in society.

I’m a very positive thinker, and I think that is what helps me the most in difficult moments.

自信是最好的装扮。

子游问孝，孔子说：“现在的孝顺，只是能赡养老人。即使是犬马，都会得到饲养。不敬重，有何区别？”