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一天,俄国生物学家巴甫洛夫为了勉励学生勤学,讲了一则古巴比伦的寓言:深夜,一个巴格百叶窗商人独自走在荒凉的山路上,突然,一个陌生的声音对他说:“捡几块石头吧!明天你就会既高兴又懊悔的。”商人一惊,觉得奇怪,不过还是听从了劝告,捡了几块石头继续赶路。天渐渐亮了,商人忍不住掏出一块石头,一看,原来是块金刚石,他高兴极了。又连忙掏出另外的石头,啊,是一块绿宝石和一块红宝石,商人欣喜若狂。伸手又往口袋里掏,可是口袋空了。商人开始懊悔起来,为什么当时不多捡几块呢?
One day, the Russian biologist Pavlov told a parable of Cuban Babylon in an effort to encourage students to work diligently: late at night, a Baghouse merchant walked alone on a desolate mountain road. Suddenly, a strange voice said to him: Pick up a few stones! Tomorrow you will be happy and remorseful. "Surprised businessman, I find it strange, but still obey advice, picked up a few stones to continue hurrying. The sky was getting brighter, and the businessman could not help but take a stone and saw that it was a diamond, and he was very happy. And quickly took out another stone, ah, is a piece of emerald and a ruby, businessmen ecstatic. Reaching out to my pocket again, but the pocket is empty. When businessmen began to regret, why did not they pick up a few more?