Once more: The light of glory is a supernatural elevation of the mind, which enables man to see God as He is in himself. It is given by God himself to those who have lived a supernatural life of faith, hope, and charity. Moreover, it is given to each in proportion to his personal merits. It therefore becomes the measure of the degree of happiness which each one of the blessed enjoys in the vision of God. CHAPTER XIV. DEGREES OF HAPPINESS IN HEAVEN. Having seen that the Light of glory is the new power, or medium, through which the blessed see and enjoy God, we must now endeavor to understand how its different degrees of intensity become the source of vastly different degrees of happiness or enjoyment. In order to understand how the different degrees of mental elevation produce different degrees of happiness in the Beatific Vision, we must first examine in what consist the different degrees of enjoyment in the creatures that now surround us. This will be as a mirror, in which we can see faint, but true, reflections of the vast difference there is between the highest and the lowest in heaven. In order to receive pleasure from creatures, it is not enough to be surrounded with them, or even to possess them: we must, moreover, be endowed with organs, or faculties, through which we can receive and appropriate to ourselves the pleasures which, according to their nature, they can give. Thus, a grand concert, which pours the most exquisite pleasures into your soul, gives none at all to a deaf man, because he lacks the receiving organ, and hence the pleasure-giving object is, in his regard, as if it had no existence. But this is not all. Not only does our pleasure depend upon the possession of receiving faculties, but the amount also, or degree, of that pleasure, depends upon the development and perfection of the same receiving organs and faculties. The more highly developed and cultivated they are, the more intense, also, will be the satisfaction and pleasure we shall receive from any given object; while persons of inferior development will receive far less, although the object is the same for all. Let us make this evident by an illustration.