But not only the sight of God is promised to the good in heaven, but also the sight of all those things which God hath made. Here on earth we perceive by our eyes the sun, moon, stars; the sea, rivers, animals, trees and minerals. But our mind does not know the substance of these created things, their essential difference, their properties or power: we cannot see even our own soul, but like blind men we feel for effects, and by reasoning, acquire a little knowledge. What then will be the joy, when our mind in the vision of God, will clearly see the substance of all things, their difference, properties and power! And what great exultation will be ours, when we shall behold the innumerable army of angels, not one of whom resembles another, and shall clearly see the difference of all! What unbounded joy will it be, when we shall behold those holy men, who have been from the beginning of the world even unto the end, united together with all the angels! When we shall behold the merits of each, their crowns and palms of victory!
--St. Robert Bellarmine, Eternal Happiness of the Saints