Mathematics is the art of giving the same name to different things.
The stranger is an element of the group itself, not unlike the poor and sundry 'inner enemies'—an element whose membership within the group involves both being outside it and confronting it.
可持续农业不是口号,而是责任,我们要为子孙后代留下绿水青山。
所有的悲剧以死亡结束,所有的喜剧以结婚告终。