Candida Phoenix Philosophica

2Afterwards, by instituting marriage, God most wisely ordained that the human being, in both body and soul, should be propagated through union. For this purpose he also pronounced and appointed his word, that blessing: “Be fruitful and multiply.” No generation or multiplication can occur without union. Although, as stated, the soul has in itself the capacity to multiply, neither a man’s soul nor a woman’s can multiply alone. It requires union with the other, through the joining of the seed of both. There the capacity and power of multiplication are immediately brought into actuality and effect, above all through the operation of that divine word and blessing, “Be fruitful,” as an appointed subordinate cause.