If you have ever been to a circus you have seen elephants tethered to a chain that is connected to a stake in the ground. You may not realize that that stake is only eighteen inches long and that elephant can easily pull that stake up, because a grown man has to pull the stake up to free the elephant. Now if a grown man can pull up the stake, why doesn’t the elephant pull that stake out of the ground and free himself?

Well, when that elephant was a baby, he did not have the strength to pull that stake out of the ground. After years of trying, the elephant concludes that he can never pull it out of the ground. So in circuses all over the world there are massive elephants, capable of lifting entire trees out of the ground by their roots, held captive by puny stakes.

Likewise, there are man…