lieving that article of faith, although the majority of 1 This idea is suggested by the broad submission to the mind of the Church indicated in such statements in the Creed of Pius IV. as, " I most steadfastly admit and embrace the Apostolical and Ecclesiastical Traditions, and all other observances and constitu- tions of the same Church." " I likewise nndoubtingly receive and profess all other things which the Sacred Canon " 16 ROMAN CATHOLICISM Christians professed it then as the Catholic Church and the Protestant Churches profess it to-day. The profession of a creed is a condition of that unity which Catholics, following the wording of the Nicene Creed and remembering the prayer of our Lord, 1 hold to be a mark of the true Church. When living, active minds are ever pondering the objects of faith, it is natural that what was at first almost instinctive and uncorrelated will tend to become eystematised. Lines of growth will make their appearance, some which will be true lines of growth, others which will be growth in wrong directions, fundamentally lines of decay. Here comes in the function of definition, making creeds more explicit. Normally, a clearly recognisable tendency will distinguish what is true from what is false ; but it may become necessary to the Church as guardian of that revelation which she holds God committed to her through his Son to lay down what are the true lines of growth, that so the faith may not suffer in its purity.