书籍是通往其他视角的窗户。
不要哭泣;不要愤怒。去理解。
数学的乐趣在于努力理解的过程。
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.
The basis of every scandal is an immoral certainty.