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.