In appraising the order and internal correspondence of the faith and human reason, St Augustine had used a phrase, in epigrammatic summary, which not only described his personal discovery and that of every convert to the Church, but also correctly stated the right causal sequence of these correlatives, Faith and Reason in their continuous development: per fidem venitur ad cognitionem. The phrase may even provide some explanation how philosophy even within its own sphere, needs and may receive assistance from the supernatural truths revealed by God. The student of Aristotle's metaphysics is often tempted to wonder why it was that the philosopher, who so clearly understood the first principles of reason and causality, and so explicitly deduced from them the existence of the First Mover and the Primal Intellect.