The essence of mathematics is not to make simple things complicated, but to make complicated things simple.

帮助某人的最好方法是赋予他们帮助自己的能力。

"Imagination is not only the uniquely human capacity to envision that which is not, and therefore the fount of all invention and innovation. In its arguably most transformative and revelatory capacity, it is the power that enables us to empathize with humans whose experiences we have never shared."

译文：年华随同时光飞快逝去，意志随同岁月而丧失。最终(像黄叶一样)枯老衰落，大多不接触世事，对社会没有任何贡献，只能悲哀困守在自己破败的房子里，那时再悔恨又怎么来得及!