人生最大的美德是真正的勇气,懂得如何面对事实并超越它们。
The greatest virtue in life is real courage that knows how to face facts and live beyond them.
The process of mathematical discovery is as important as the discovery itself.
眼睛不能同时看清楚两样东西,耳朵不能同时听清楚两种声音。