Written in 1945, Forming a Christian Mentality discusses the religious guidance of youth intended for parents, teachers and priests. The first part, entitled Faith, leads man through life from the cradle to the grave, guided by Revelation, principally on the basis of Holy Scripture. The second part, entitled Worship, conducts man through the life of grace. It is based predominantly on the liturgy of the Mass and some Sacraments. The author has in mind to improve the Christian mentality by showing that the principles of secularism and materialism are in contradiction with the principles of Christianity and that public and private life cannot be separated from each other and conducted on different principles. All who are aquatinted with the modern errors of the mind and heart will readily see that the restoration of a truly Christian mentality is of the utmost importance. Among the most pernicious errors that threaten to influence even Catholics are: secularism, materialistic liberalism, atheistic totalitarianism, rationalism, moral skepticism, and moral autonomy. It depends greatly on man's mentality, whether Christ will continue to live in the Christian and whether man will be a living member of the Mystical Body of Christ or not.