Jesus and Greek Philosophy If you asked someone like Heinrich Rommen, a Catholic political philosopher, he would agree that there is a lot of similarity between Christian teaching and Greek philosophy. An important point he would make, though, is that truth is objective, not relative. This being the case, and truth stemming from God, who is the Truth (John 14:6), even truth that comes from a non-Christian source is still from God. Since the Church was designated as the mouthpiece of God (symbolism of the keys given to St Peter), the Church then becomes the heir to all truth previously known through reason. To put it simply, all things that are true, having been discovered by Greeks, Asians, Celts, etc, belongs to the Church. He discusses this in depth in an earlier chapter of his book,The State in Catholic Thought