每个人都有床头金尽的时候。
    ——杜先生晚年在香港,先生为中国抗战.赈灾慈善做出巨大贡献,晚年依旧气度过人,毁掉所有欠条。
我不认为每个人都应该成为数学家,但我确实相信许多学生没有给数学一个真正的机会。
You can't just sit there and wait for people to give you that golden dream. You've got to get out there and make it happen for yourself.