当每一分钱都要精打细算,犯错的空间就消失了。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
Freedom is not a condition, but an attitude.
一支箫一把剑是我平生的志向,辜负了狂名十五年。
All our dreams can come true if we have the courage to pursue them.