The blind man and the cave

A blind man is dwelling in a cave.  He is not confined to the cave.  He can come and go as he pleases.  He lives in the cave because he has found it to be a rather congenial place, a place of shelter from the extremes of weather.  Yet he is by no means a hermit or a loner.  He enjoys his frequent walks to the nearby town where he can socialize with others.  He is an avid radio listener, and he uses the radio to keep himself well up to date on the local and national goings on.