据说人无完人。又据说磨练出完美。你们对下词好吗?

Sometimes we get sad about things and we don’t like to tell other people that we are sad about them.

治理社会就应当完全根据这种共同的利益。人们总是愿意自己幸福，但人们并不总是能看清楚幸福。

Every building is built for a specific purpose in a specific place for a specific society.

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

我感到越不确定和不安，就越坚持绘画的念头。

真相常常隐藏在言语之间的沉默中。