阳明先生说:“知是行之始,行是知之成。”我以为不对。应该是:“行是知之始,知是行之成。”我们先从小孩子说起,他起初必定是烫了手才知道火是热的,冰了手才知道雪是冷的……凡此种种,我们都看得清楚“行是知之始,知是行之成”。富兰克林放了风筝才知道电气可以由一根线从天空引到地下。瓦特烧水,看见蒸汽推动壶盖便知道蒸汽也能推动机器。伽利略在比萨斜塔上将轻重不同的球 Mr. Yang Ming said: “I know the beginning of the line, the line is known. ” I thought it was wrong. Should be: “The line is the beginning of knowing, knowing is the line.” “We start with the children, he must have been hot at first to know the fire is hot, I know the snow is cold ... ... All these kinds of things, we can all see clearly that ”the line is the beginning of knowing, knowing is what it takes to accomplish." Franklin put a kite to know that electricity can be drawn from the sky to the ground by a wire. Watt boil water, see the steam push the lid will know steam can also push the machine. Galileo in the Leaning Tower of Pisa will be different severity of the ball