Procreations take place on earth, because they are from firsts by ultimates (illustrated 75).

The angels were once men (75 [CL 28-30]). Offspring born of two who are in love truly conjugial derive from their parents the conjugial good and truth; from which they have the inclination and capacity, if sons to perceive the things that belong to wisdom, if daughters to love the things which wisdom teaches (285-290 [CL 202-204]).

This is the case for the reason that the soul of the offspring is from the father, and the clothing corresponding to the soul is from the mother (291-293 [CL 206]).

How man (homo) comes into the seed, and the quality of the seed (various things, 293 [CL 183, 220, 245]).

In the marriage of good and truth there is what is generative and prolific, whence are the propagations of all things in the universe, through which there is a continuance of creation (330-336 [CL 92, 115]). Because goods and truths are in forms, therefore all things propagate themselves substantially and materially (344-352).

Propagations are continuations of creation; and in them there is the image of the infinite and eternal, from the Lord the Creator, who is infinite and eternal (353 etc., to 372 [CL 183, 220]).

The soul is in a state of perpetual fructification and propagation (498-501 [CL 220]).

Conjugial love in its origin is the love of the propagation of good and truth (502-511).

(Concerning the organs of prolification, see SEED.)

The influx of the soul into the organs of generation, and the formation of the seed, thus of man (539-548, 549-560 [CL 183, 220, 245]).

What is prolific in living things and in things not living (581, 582 [CL 183]).

Spiritual conjugial love is that from which, in which, and thus for which, there is conception, growth and formation (579-584 [CL 66]).

How conjugial love progresses from firsts through mediates to ultimates (630-638 [CL 101, 183, 400, 401, 440, 441, 447]).

From the form in which man is, there can proceed only that which is similar (722-752 [CL 85]).

Love and wisdom increase with those who are in conjugial love (723, 724, 740-742 [CL 93, 95, 98, 130, 211]).

Prolification corresponds to the love of producing and preserving the truths and goods of the church (1361, 1362 [CL 127, 389, 390]).