But how completely paralysed ordinary minds are by this early metaphysical conditioning can be seen in its most lurid and ludicrous aspect when such a mind ventures to criticize a doctrine different from the one he himself holds. All you find him concerned to do as a rule is to demonstrate that its dogmas differ from those of his own: with that he believes in all simplicity he has proved the falsity of the other doctrine. It really never enters his head to pose the question which of the two might be true: his own articles of faith are to him certain a priori.
a priori truth
