Which preposition to use with platonism

of Occurrences 4%

It may be true, according to the poetical Platonism of Wordsworth, that "heaven lies about us in our infancy"; but we very soon leave it far behind us, and, as we approach manhood, sadly discover that we have grown up into a jurisdiction of a very different kind.

to Occurrences 1%

He read the books of Plato, which had a good effect, since he saw, what he had not seen before, that true realities are purely intellectual, and that God, who occupies the summit of the world of intelligence, is a pure spirit, inaccessible to the senses; so that Platonism to him, in an important sense, was the vestibule of Christianity.

Which preposition to use with  platonism