Adapting old programs to fit new machines usually means adapting new machines to behave like old ones.
Nothing can be created out of nothing.
【译文】 宰予白天睡觉。孔子说:“他象朽木一样无法雕琢,象粪墙一样无法粉刷,我能拿他怎样?”孔子又说:“以前我看人,他说什么,我信什么;现在我看人,听他说,再看他做。因为宰予,我改了过来。”