Each of us knows he is alive, and each of us seeks to be more alive, for each knows that far too often he is not as alive as he could be, as he really wants to be. Yet that is the way it is with us. Some days we are so alive, and some days we feel ourselves slipping under the death tide that is inexorably gathering within us. It is the great tragedy of the human experience that time and again we are blind and deaf to the opportunities for fuller living.