Theorems are the permanent literature of mathematics.
We are just beginning to scratch the surface of understanding how our bodies perceive the environment.
我写作是为了理解世界,也是为了理解自己。
智者虽然很善于谋划,但是不如能抓住时机。
What other dungeon is so dark as one's own heart! What jailer so inexorable as one's self!