A mathematical proof is a poem written in the language of logic.

I don't think President Bush is doing anything at all about Aids. In fact, I'm not sure he even knows how to spell Aids.

Stay true to yourself and never let anyone change who you are.

人们之所以加入社会是为了保护他们的财产。

当侦探就像当科学家一样，你必须注意到别人没注意到的事情。