出自汉·桓宽《盐铁论·执务》。阜，土山。土积得多便会成山，水积得多便成江河。此以积土成山、积水成河为喻，说明积少成多、凡事要从一点一滴做起的道理。
I've always believed that if you put in the work, the results will come.
我不完美，但我始终是我自己。
The essence of mathematics lies in its freedom.