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Nota Bene: The following item is a scholarly text which an average reader, who lacks philosophical or theological training, may find very difficult. Readers who have some philosophical or theological background or those with advanced degrees in psychology are most likely to benefit from this work.

This printing contains all three volumes.


Vol. I: Philosophical Psychology

This text, the first of three volumes in the Introduction to the Science of Mental Health series, treats the science of mental health and illness and is based on the writings of St. Thomas Aquinas. The text is divided into three parts:

  • What constitutes a valid science of psychology;
  • The principles one must know in order to discuss mental health and illness;
  • What is mental health and illness according to St. Thomas and what are the causes of mental health and illness from a Thomistic perspective.

The Forward and imprimatur for the text are by His Excellency, Fabian Bruskewitz, Bishop-Emeritus of the Diocese of Lincoln, Nebraska.


Vol. II: Sacred and Other Spiritual Causes

This second of the three volumes addresses the various aspects of Catholic Theology as they affect mental health. Some of the areas covered are:

  • Relationship of psychology to theology;
  • Sin as it affects mental health;
  • Infused Virtues, Sacraments, Gifts of the Holy Ghost and Prayer;
  • Demonic Influences.


Vol. III: Quodlibetal Issues and Practica

The third text in the series, this volume addresses the various aspects of psychology which are not covered in the prior two volumes as well as the practical application of Thomistic psychology. Some topics included are:

  • Music;
  • The Subconscious
  • Dreams;
  • Hypnotism;
  • Self Knowledge;
  • Personality and Temperaments;
  • Addictions;
  • Developmental and Educational Psychology;
  • Diagnosis and Counseling;
  • The Role of the Empirical in Psychology.



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Note: Due to Father Ripperger’s busy schedule, he is not able to respond to any questions concerning Theology, Philosophy, current affairs within the Church or matters of spiritual direction at this time. If you are trying to contact Fr. Ripperger to discuss the case of diabolic influence, go to Any emails sent to this address requesting his help are unable to be forwarded.

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