We teach a subject not to produce little living libraries on that subject, but rather to get a student to think mathematically for himself.

爱情不是终日彼此对视，爱情是共同瞭望远方，相伴而行。

释义：做事如果不彻底解决问题，可能会留下隐患，导致自己遭受伤害。

时间并非实物，因此我们既无法浪费也无法节省；它始终与我们同在。