事事难上难,举足常虞失坠;件件想一想,浑身都是过差。
凡事都有困难应考虑周详,行动上要顾虑缺失,想一想自己的行为,都有许多差错。
The greatest works of art are born from the deepest sorrows.
Success is not final, failure is not fatal: It is the courage to continue that counts.
The pursuit of mathematical truth is a lifelong journey.