有个故事可能大家都听过:一位哲学家带着他的学生在漫游了世界后,坐在一块荒地上休息。哲学家若有所思地问弟子:“如果一块地长满了杂草,你们如何把杂草除掉?”一个弟子说:“老师,只要有铲子就够了。”哲学家点点头。另一个弟子说:“用火烧也是很好的办法。”哲学家微微一笑。第三个弟子说:“撒上生石灰连根都烧掉。 There is a story we might all hear: A philosopher took his student and roamed the world, resting on a wasteland. Philosopher thoughtfully asked his disciples, ”How do you get rid of weeds if they are covered with weeds?“ One disciple said: ”Teachers, as long as they have shovels.“ ”Philosophers Nod. Another disciple said: “It is also a good idea to use fire.” The philosopher smiled. The third disciple said: "Sprinkle with raw lime and burn it with roots.