在真实与不真实之间，在真与假之间，没有严格的区别。一件事不一定是非真即假；它可以是既真又假。
There are no hard distinctions between what is real and what is unreal, nor between what is true and what is false. A thing is not necessarily either true or false; it can be both true and false.
过去是一个陌生的国度；那里的人们行事方式不同。
A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.