We are to allow one thing to be really and truly distinct from the other, to be its own genuine self. There is a logical and philosophical urge in thinking men to reduce all things to a single unity. But this urge of the natural reason tends to petrify the heart. There is no single essence to which all existing things belong, no single essence which makes all things basically one. The only true unity of created things is the unity created by love. The heart embraces all things in their great variety and the heart loves them all.