"To speak of love is not "preaching," for the simple reason that it means to speak of the ultimate and real need of every human being. That this need has been obscured does not mean it does not exist. To analyze the nature of love is to discover its general absence today and to criticize the social conditions which are responsible for this absence. To have faith in the possibility of love as a social and not only exceptional-individual phenomenon, is a rational faith based on the insight into the very nature of man."