Remember, Jesus himself was considered a Heretic by the religious authorities of the day.
If the church ever says “anathema sit“, you know that it is Satan speaking, not God. In God everything is affirmation, and nothing is denial. When the church condemns, it is always just Satan trying to crush the prophets of the age by ecclesiastical fiat.
So listen closely to the Origens, Ariuses, Pelagiuses, Nestoriuses, Luthers, Calvins and Robertses of the day: They have discovered something important and profound, and it is only by listening to them that we will avoid further schism and maintain the unity of the church.