The same lethargy, I am afraid, characterizes the use of our faculties and senses. Only the deaf appreciate hearing, only the blind realize the manifold blessings that lie in sight.Particularly does this observation apply to those who have lost sight and hearing in adult life.But those who have never suffered impairment of sight or hearing seldom make the fullest use of these blessed faculties.Their eyes and ears take in all sights and sound hazily, without concentration, and with little appreciation.It is the same old story of not being grateful without missing.