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。
一个灰色的回忆,怎能抗衡现在的生动与自由。
Literature should disturb the comfortable and comfort the disturbed.
心理活动的目的是引导行为。
I don't believe in pessimism. If something doesn't come up the way you want, forge ahead. If you think it's going to rain, it will.
如果知识会造成问题,那么即使透过无知,我们也无法解决这些问题。