The difference between philosophy and theology is not that theology treats of God and divine truths, and philosophy does not. Philosophy discusses divine truths. But the difference lies here, that theology views truths in the light of revelation, while philosophy views them in the light of reason. Yet there are truths that belong to philosophy, truths that belong to theology, and truths that belong to both. The problems of the existence of God, the immortality of the soul, and the relation of the world to God are theological problems, yet they can also be demonstrated by the reason of philosophy; but the mysteries of the Trinity, the Incarnation, and the temporal creation are beyond the scope of the reason and belong to theology. Philosophy and theology are distinct, yet they are in harmony. Theology supplements philosophy with faith; philosophy supplements theology by (1) establishing preliminary motives, (2) supplying analogies, (3) answering objections. Thomas accepts both propositions which had divided his predecessors: _credo ut intelligam_ and _intelligo ut credam_. Above historical revelation there is something even higher, which could be called another realm, were it not more of a hope than a possession of man. Its appearance in the doctrine of Thomas shows the influence of Plato upon him. It is the immediate union of the individual with God in mystic ecstasy.[64] It is the dome of the religious temple that Thomas has built. But Thomas was careful to insist that this heavenly glory could not be gained except through the offices of the church. The individual cannot reach God through his own unaided efforts, but the sacraments of the church form the mysterious background of the religious life.