A mole, a creature blind from birth, once said to his Mother:  "I am sure than I can see, Mother!"  In the desire to prove to him his mistake, his Mother placed before him a few grains of frankincense, and asked, "What is it?'  The young Mole said, "It is a pebble."  His Mother exclaimed:  "My son, I am afraid that you are not only blind, but that you have lost your sense of smell.