Complex sentence: According to Fortescue, hesychasm arose from ideas of the philosophies of Neoplatonism and Plato himself, and that, since Western theology was impregnated by Aristoteleanism and scholasticism, it could not be reconciled with Hesychasm.
Split into simpler sentences: According to Fortescue, hesychasm arose from ideas of the philosophies of Neoplatonism and Plato himself. Since Western theology was impregnated by Aristoteleanism and scholasticism, it could not be reconciled with Hesychasm.