While nothing justifiesstriking another student…I know goodfriends are worth defending.

I'll never stop helping and loving people the way Jesus said to.

Every piece of plastic ever made still exists somewhere - that's not just a fact, it's our responsibility.

科学中最重要的不是获得新的事实，而是发现思考它们的新方法。

忙于追求天理的人，对人的欲望必定淡薄。忙于私事的人，处理公务必然粗心，追求虚饰外表的人，内在之心必定单薄。