In debate on faith and reason two opposing positions have dominated the field. The first position asserts that faith and reason are commensurable and the second position denies that assertion. Those holding to the first position differ among themselves as to the extent of the compatibility between faith and reason, most adherents relegating the compatibility to the ‘preambles of faith’ (e.g. the existence of God and his nature) over against the ‘articles of faith’ (e.g. the doctrine of the incarnation). Few have maintained complete harmony between reason and faith, i.e. a religious belief within the realm of reason alone. The second position divides into two sub-positions: (1) that which asserts that faith is opposed to reason (which includes such unlikely bedfellows as Hume and Kierkegaard), placing faith in the area of irrationality; and (2) that which asserts that faith is higher than reason, is transrational. Calvin and Barth assert that a natural theology is inappropriate because it seeks to meet unbelief on its own ground (ordinary human reason). Revelation, however, is ‘self-authenticating’, ‘carrying with it its own evidence’.1 We may call this position the ‘transrationalist’ view of faith. Faith is not so much against reason as above it and beyond its proper domain. Actually, Kierkegaard shows that the two sub-positions are compatible. He holds both that faith is above reason (superior to it) and against reason (because reason has been affected by sin). The irrationalist and transrationalist positions are sometimes hard to separate in the incommensurabilist's arguments. At least, it seems that faith gets such a high value that reason comes off looking not simply inadequate but culpable. To use reason where faith claims the field is not only inappropriate but irreverent or faithless.