The poor perpetually sell their time cheaply, yet can never buy it back.
穷人的时间总被廉价出售，却永远买不到时间。
Teach me to love? Go teach thyself more wit,I chief professor am of it，The god of love, if such a thing there be, may learn to love from me.
数字是形式和思想的统治者，也是神祇和恶魔的原因。
生活要么是一场大胆的冒险，要么什么都不是。
I have made a ceaseless effort not to ridicule， not to bewail， not to scorn human actions， but to understand them.
数学中最深刻的思想往往来自最简单的问题。