人生就像一杯茶，不会苦一辈子，但总会苦一阵子。

A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.

我们不是在从事为人们提供咖啡的业务，我们是在从事为咖啡服务的人的业务。