Originally published by Dimension Books in 1972, this volume, with a new preface, retains its significance as a seminal text on the science of formation. Important themes in the emergent formation theory of personality are congeniality, compatibility, and compassion, which correspond on a social level to justice, peace and mercy. This book reflects these core concepts and fosters a deepening of the concern for social justice. Intended for students in the theology of human formation. Co-published with the Institute of Formative Spirituality at Duquesne University.