数学证明是用逻辑语言写成的诗。
A mathematical proof is a poem written in the language of logic.
出自《魏源集·默觚下·治篇五》。三代以上,天都跟现在的天不一样,地都跟现在的地不一样,人也跟现在的人不一样,物也和现在的物不一样。
You don't have to be perfect to inspire others.
我不考虑失败。我考虑下一步。
Sometimes life hits you in the head with a brick. Don't lose faith.