5053. There are heavenly societies to which correspond all and each of the members and organs allotted to generation in both sexes. These societies are distinct from others, just as this province in man is quite distinct and separate from the rest. The reason why these societies are celestial, is that conjugial love is the fundamental love of all loves (n. 686, 2733, 2737, 2738). It also excels the rest in use, and consequently in delight; for marriages are the nurseries of the whole human race, and are also the nurseries of the Lord's heavenly kingdom; for heaven is from the human race.