"We must be tolerant to the erring, because ignorance may have led them astray; but we must be intolerant to the error, because Truth is not our making, but God’s. And hence the Church in her history, due reparation made, has always welcomed the heretic back into the treasury of her souls, but never his heresy into the treasury of her wisdom.”    - Moods and Truths, by Fulton J. Sheen