当你拒绝你一无所知的东西时,这是最高形式的无知。
质量从来不是偶然的;它始终是智慧努力的结果。
数学的美在于它既是艺术又是科学。
Science is a journey, not a destination.
No man really knows about other human beings. The best he can do is to suppose that they are like himself.