系统对给定输入的响应是其历史记录的函数。
The best films are the ones that make you think.
A good novel tells us the truth about its hero, but a bad novel tells us the truth about its author.
一本好小说告诉我们关于其主人公的真相,而一本坏小说告诉我们关于其作者的真相。
艺术是对冷漠的解药。