I'm not a perfectionist, but I like to feel that things are done well. More important than that, I feel an endless need to learn, to improve, to evolve.

释义：天地阴阳不交接，是阻塞之象。君子以节俭为德而避开危难，不可追求荣华而谋取禄位。

真实的生活缺席了。我们不在这个世界上。

理解代数簇的算术就是理解其中隐藏的对称性。