Let me tell you a legend about a beautiful swan that alighted one day by the banks of the water in which a crane was wading about seeking snails. For a few moments the crane viewed the swan in stupid wonder and then inquired:

"Where do you come from?" 

"I come from heaven!" replied the swan. 

"And where is heaven?" asked the crane.

"Heaven!" said the swan, "Heaven! have you never heard of heaven?" And the beautiful bird went on to describe the grandeur of the Eternal City. She told of streets of gold, and the gates and walls made of preci…