He simultaneously functioned as a social critic and moral guide as he believes that: The playwright must dig at the roots of sickness today as he feels it the death of the old God, the failure of science, and materialism to give any satisfying new one for the surviving primitive religious instinct to find meaning for life.17 It must be noted that the deepest emotional drive in O'Neill‟s plays is usually based on the father-son, father-daughter and mother-son relationship. ...