Usually, people prefer to remain silent concerning a matter which they know nothing about and do not understand. This, of course, is completely sensible. Let us imagine, for example, a person who knows nothing about chemistry but who, nevertheless, constantly insists upon interfering in the affairs of chemists. He corrects their scientific formulae which have been obtained with great difficulty, changing their order or replacing one with another. We would agree that such a person is acting with the highest degree of imprudence and that we can only have pity for him. There is one field, however, in which too many people consider themselves to be complete masters, in fact, almost legislators; that is the area concerning the Christian faith and the Church. In this field also, clear and definite formulae have been established with a great effort of theological thought, spiritual guidance, faith, and piety.