生命不是一个段落,死亡也不是一个括号。
Life is not a paragraph, and death is no parenthesis.
年轻时,你以为长大后就会幸福。但长大后,你意识到年轻时的自己才是幸福的。
There is no friend as loyal as a book.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.