Thus, in a given case, the decision is not difficult for the Catholic. On one side stand the representatives of a science which has erred, very often, incomparably more frequently than the ecclesiastical teaching authority, and which lacks the special aid of God. On the other side is the ecclesiastical authority, which has almost never erred, and which enjoys special divine aid; moreover, it examines into its questions with greater caution and care, because it has more to lose. In addition it is almost invariably able to point to a large number, and frequently the majority, of savants who indorse its decisions, because these mostly concern disputed questions not yet scientifically determined. Hence the Catholic will find no difficulty in presuming that the decision is in accord with the truth; the more so because, as a rule, he himself is unable to examine scientifically both sides of the question. Should any one, nevertheless, be clearly convinced, by substantial and valid reasons, that there has been prejudgment, then he would not be any longer obliged to give it his interior assent: truth before all else. It would be easy, too, by presenting reliable information to an authoritative quarter, to secure the triumph of the truth. However, in this case a man must be ever on his guard against the tendency to overrate his own arguments. In excitement he easily thinks himself to be certainly in the right, but when considering the matter quietly before God and his conscience, he will rarely come to the conclusion that it would be wise to set his judgment above the decision. In the case of _Galileo_ the decision of the Congregation was by no means opposed by a clear conviction of the truth of the opposite.