David says that as a boy he noticed that when his mother prayed, she never said, “Amen” at the end of her prayers.  When he went to church and the pastor prayed, he always finished with a flourish and a hearty, “Amen.”  That, of course, was the sign that the prayer was ended and it was time to head for the door or whatever.  When others prayed they always signed off with an “Amen,” as a kind of spiritual radio station break signaling the conclusion of the whole matter.  But not his mother, and it bothered David.