任何真正新颖的东西都是在一个人的青年时期发明发现出来的，当一个人变得更有经验，更有名，也更顽固。
Anything truly novel is invented only during one’s youth， later one becomes more experienced more famous， and more blockheaded.
Every equation we write is a poem of the universe, a verse in the grand epic of existence.
The most profound ideas in mathematics often arise from the simplest observations.
从近处看，生活是悲剧；从远处看，生活是喜剧。
The photograph is literally an emanation of the referent. From a real body, which was there, proceed radiations which ultimately touch me, who am here.