The most terrifying enemy is the lack of strong faith. ——Romain Rolland

A trickle of water can eventually wear down a boulder, not because of its power, but because of its constant dripping day and night. ——Beethoven

Only perseverance can make us successful, and the source of perseverance lies in being unswerving and resolutely taking the means needed to achieve success. ——Chernyshevsky

As long as you work hard enough, an iron pestle can be ground into a needle. ——Anonymous

One penny a day, ten penny a day. The rope cut off the wood, and the water dripped through the stone.

——Ban Gu