What Is Plato's Core Author of All Heresies?

At the end of the 16th century you get first and interestingly in the counter-reformation, so on the Roman Catholic side. You suddenly have a huge fragmenting of Christian discourse in Europe. And then we get to the crucial next part of the story that I'm still trying to tell although I'm diverting sometimes a bit. That is the confrontation in Roman Catholicism and Protestantism. And the relevance to Western esotericism.