Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
The absurdity of life doesn't make it meaningless, but rather gives it a special kind of meaning.
我们不是从祖先那里继承了地球,而是从我们的孩子那里借来的。
容易愤怒就会伤害别人;私欲太多了就会害了自己;贪图安逸就会有害于自己的品德;忧虑太多,就会削弱自己的意志。