Whatever is delightful is there in superabundance. If delights are sought, there is supreme and most perfect delight. It is said of God, the supreme good: ‘Boundless delights are in your right hand.’ Again, eternal life consists of the joyous community of all the blessed, a community of supreme delight, since everyone will share all that is good with all the blessed. Everyone will love everyone else as himself, and therefore will rejoice in another’s good as in his own. So it follows that the happiness and joy of each grows in proportion to the joy of all.
–Saint Thomas Aquinas (1225-1274)