过去是一个异国，他们在那里做事的方式不同。

儿童教育是人类最重要的一个问题。

尚未证明智力具有任何生存价值。

The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

我明白了脆弱也没关系。

People always say that you can't please everybody. I think that's a cop-out. I think if you work hard enough, you can please everybody.