In view of the manifold interests of contemporary psychology and of the searching criticism in regard to the meaning and foundations of psychology to which we called attention in a previous contribution, the question of the possibility of a Catholic psychology arises with a certain amount of urgency.

The Catholic student, whether of psychology in general or other subjects in which psychology may enter, as well as the educated layman interested in such subjects, sometimes asks whether there is any Catholic book on Psychology to which he may turn for guidance. One has had to admit regretfully that, outside the manuals of philosophy written primarily for the use of ecclesiastical students, there do not appear to be any which quite meet the needs of the lay student. It is true that books dealing with various aspects of modern psychology have from time to time been written by Catholic professors of the science. We may mention, for instance, one by Prof. T. V. Moore, O.S.B., of the Catholic University of Washington, D.C., Dynamic Psychology, and another by Prof. John Lindworsky, S.J., of the University of Prague, Experimental Psychology. There are others by continental writers not translated into English, but all of these works deal with scientific psychology, and do not touch upon philosophical problems. When therefore we speak of Catholic psychology we have to ask in what sense the expression is to be understood, and what precisely is to be sought from a Catholic book on Psychology as distinct from any other.