The only service a friend can really render is to keep up your courage by holding up to you a mirror in which you can see a noble image of yourself.
数学语言是通用的;它超越了所有文化障碍。
你越是积极且实际地投入,就越会感到成功。
人は誰でも、自分が正しいと思っている。
形式追随功能——这一直被误解。形式与功能应合二为一,在精神上统一。