In mathematics, the journey of discovery is as important as the destination.

所谓生活，一半是回忆，一半是继续。

The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all.

爱是冒着被毁灭的风险。不去爱就是毁灭自己。