There was another life that I might have had, but I am having this one.
数学中真正的挑战不是解决问题,而是提出正确的问题。
I don't know what I would do if I didn't act. I think I would go mad.
信仰是生命的意义,这种感觉使人不毁灭自己,而是继续活下去。