出自汉·桓宽《盐铁论·地广》。释义：不因为生活的贫困而改变自己的节操，不因为地位的低贱而变更自己的志向。

Success comes from hard work and dedication.

All mankind... being all equal and independent, no one ought to harm another in his life, health, liberty, or possessions.

Mathematics is the science of patterns, and we study them to understand how things work.

快乐的人不是处于某种特定环境的人，而是具有某种特定态度的人。