Time is a river that flows backward as much as it flows forward.
出自汉·桓宽《盐铁论·击之》。释义:做事中途停止就不会成功,种地偷懒的人不会有收获。比喻学习应持之以恒,不能懈怠。
儿童的教养源于成人的修为而非说教。