在算法的领域中，效率和优雅并不是相互排斥的，而往往是同一枚硬币的两面。
Adversity is the first path to truth.
We are all born mad. Some remain so.
The poet is a man who plants a tree and then sits in its shade.
有时最艰难的战斗是我们内心的战斗。