There’s a story about the California gold rush that tells of two brothers who sold all they had and went prospecting for gold. They discovered a vein of the shining ore, staked a claim, and proceeded to get down to the serious business of getting the gold ore out of the mine. All went well at first, but then a strange thing happened. The vein of the gold ore disappeared! They had come to the end of the rainbow, and the pot of gold was no longer there. The brothers continued to pick away, but without success. Finally, they gave up in disgust.

　　They sold their equipment and claim rights for a few hundred dollars, and took the train back home. Now the man who bought the claim hired an engineer to examine the rock strata of the mine. The engineer advised him to continue digging in the same spot where the former owners had left off. And three feet deeper, the new owner struck gold.

　　A little more persistence and the two brothers would have been millionaires themselves. That’s gold in you too. Do you need to dig three feet further?

　　有个故事讲的是加州淘金潮时，有两个兄弟卖掉了他们所有的家产去加州淘金。他们发现了一个金光闪闪的矿脉，于是买下了这个矿藏的开采权，一定要把矿藏中的金子挖出来卖钱。开始进展的很顺利，但后来发生了一件奇怪的事情。金矿脉突然消失了！他们的幻想破灭了，金矿不在了！兄弟俩开始继续挖，但仍然没有发现矿脉。最后，他们气急败坏的放弃了。

　　他们以几百美元的价格卖掉了自己的设备和开采权，然后坐着火车回到了家乡。现在那个买他们金矿开采权的人雇了一个工程师去勘查了这个金矿的岩层结构。这个工程师建议他继续在上次那两个兄弟挖到的地方挖下去。于是又挖了3英尺后，这个人发现了金子。

　　如果那兄弟俩再多一点点坚持的话，也许现在已经是百万富翁了。你本身也藏有金子，你需要再多挖3英尺吗？