出自《海国图志序》。学习外国的长处用来征服外国。
我绝不会再像以前一样,把命运加给我们的一点儿不幸拿来反复咀嚼(念念不忘);我要享受现时,过去的事就让它过去吧。
A mathematical proof is a poem written in the language of logic.
The primary rules of obligation are those that require or forbid certain actions.
The only thing that matters is the truth.