Christ alone had the monopoly on Truth

 "The ancient philosophers knew very little of these important truths; Jesus Christ alone has expressed them divinely well and in a manner so clear and familiar that the coarsest of minds have grasped them. Thus his gospel has entirely changed the course of human affairs; he has brought us to know the kingdom of heaven, or that perfect republic of minds which deserves the title of City of God, whose admirable laws he has disclosed to us." - G.W. Leibniz, Discourse on Metaphysics, Page 40 and 41

Only Truth is found in and by Christ alone