You can't go through life with a catcher's mitt on both hands. You need to be able to throw something back.
你不能双手都戴着接球手套度过一生。你需要能够回馈些什么。
一个好的数学问题的定义是它产生的数学,而不是问题本身。
南开校训,意为培养公正与能力兼备的人才,追求不断创新。
世界充满了神奇的事物,耐心地等待着我们的感官变得更加敏锐。
Do not say a little in many words but a great deal in a few.