We are now entering on a systematic study of this religion; and we shall make this study as scientific as the brevity of the present work allows. Science examines into the reasons of things; it considers, not only what an object is, but why it is such, and how it came to be such. The scientific study of the Catholic religion therefore examines, not only what this religion is, and in particular what doctrines it teaches, but also how it came to be what it is, and why it teaches every one of these doctrines. It accounts for every point, as far as this is possible, from the principles of reason and of revelation.
3. The attitude of mind on the part of Catholics toward the Church is one of deep reverence, of love, and of perfect docility, such as every dutiful child cherishes in regard to its parents. Well instructed Catholics can see no reason why they should distrust her guidance; and they would consider it as unwarrantable in them to question her authority, as it would be for sons and daughters of a respectable family to ask their parents for proofs of their right to govern the home. Catholics, therefore, do not study the claims and the doctrines of the Church in a doubting spirit, but only as scientific students, that they may understand them distinctly and know how to explain and prove them to others.
4. But non-Catholics approach the Church as inquirers, looking, in a matter which is of the highest importance, for reliable guidance, such as they have not in their sects. For the sects do not profess to be infallible; they require that every man shall judge for himself. It is therefore the duty, as well as the interest, of all non-Catholics to search most carefully for the true religion. To do so successfully, they should rid themselves of all prejudices, and examine with earnestness and perfect
