There was a Mole, a creature who was 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.