Because in agriculture, if you had 10 kids and you grow up a little bit earlier and you work a little bit harder, you could produce about five times more wealth, on average, than your neighbor.
因为农业社会中，如果你有10个孩子 你会比他人早起，比他人努力工作 平均而言，你创造出的财富就是 你邻里的五倍多