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。
The limits of the possible can only be defined by going beyond them into the impossible.