“And if all of us are play-acting, there can be no such thing as a soul mate, because we don't have genuine souls.”

p, 125
Man a Machine (1747)

Letter to Michael Tolkien (March 1941)
Context: Nearly all marriages, even happy ones, are mistakes: in the sense that almost certainly (in a more perfect world, or even with a little more care in this very imperfect one) both partners might be found more suitable mates. But the real soul-mate is the one you are actually married to.

1840s, Heroes and Hero-Worship (1840), The Hero as Prophet
Context: We are to remember what an umpire Nature is; what a greatness, composure of depth and tolerance there is in her. You take wheat to cast into the Earth's bosom; your wheat may be mixed with chaff, chopped straw, barn-sweepings, dust and all imaginable rubbish; no matter: you cast it into the kind just Earth; she grows the wheat, — the whole rubbish she silently absorbs, shrouds it in, says nothing of the rubbish. The yellow wheat is growing there; the good Earth is silent about all the rest, — has silently turned all the rest to some benefit too, and makes no complaint about it! So everywhere in Nature! She is true and not a lie; and yet so great, and just, and motherly in her truth. She requires of a thing only that it be genuine of heart; she will protect it if so; will not, if not so. There is a soul of truth in all the things she ever gave harbor to. Alas, is not this the history of all highest Truth that comes or ever came into the world?

Source: Steelheart

Source: Wicked: The Life and Times of the Wicked Witch of the West

Source: Entwined with You