Saint Thomas Aquinas - 'The Dumb Ox'

by G.K. Chesterton

That was what finally roused St. Thomas to his last and most emphatic protest. He had won his battle for a wider scope of philosophy and science; he had cleared the ground for a general understanding about faith and enquiry; an understanding that has generally been observed among Catholics, and certainly never deserted without disaster. It was the idea that the scientist should go on exploring and experimenting freely, so long as he did not claim an infallibility and finality which it was against his own principles to claim. Meanwhile the Church should go on developing and defining, about supernatural things, so long as she did not claim a right to alter the deposit of faith, which it was against her own principles to claim. And when he had said this, Siger of Brabant got up and said something so horribly like it, and so horribly unlike, that (like the Antichrist) he might have deceived the very elect.