truth: (a) the teaching church not add new teaching or fill their minds with new doctrine: for that they must use their minds in the ordinary way of man. But he prevents falsehood from being taught by them. To put this matter in a nutshell. The ordinary man has three courses open to him — he may say what is right, he may say what is wrong, or he may be silent. The infallible man has only two. He is prevented by God from saying what is wrong. He may therefore say what is right, or he may be silent. As to which of these alternatives he shall pursue in a particular case, what is to decide? As between teaching what is right and remaining silent, his infallibility will not help. It prevents him ft-om teaching what is wrong. It can do no more for him. What, then, is to decide whether he shall teach right or remain silent? He can say what is right only if he knows what is right — if, that is, he has made the fullest possible use of all the means of acquiring knowledge. If he does not know the right answer, he must remain silent: and this might very well happen. A Pope does not necessarily by some miracle know the whole of Catholic doctrine, the answer to every doctrinal question that could be raised. The Church, of course, is over-ruled by the providence of God, and if some teaching were at a given moment essential for the Church’s well-being, God would see that we had it. But I am concerned here with the human machinery, so to speak, of infallibility. And it remains true that what he does 75