在一个数据结构上运行100个函数比在10个数据结构上运行10个函数要好。
It is better to have 100 functions operate on one data structure than 10 functions on 10 data structures.
The past does not belong to us; we belong to it.
A sense of timing is the mark of genius.
痛苦是暂时的，放弃却是永远的。