I have chosen a strange subject to celebrate the centenary of Thomas Aquinas here, at Oxford. Is it not paradoxical, if not a little provocative, to speak of ‘St Thomas and the Spirit of Ecumenism’? For several reasons great caution is to be recommended.
First of all, there can only be ecumenism if one accepts the other as other, that he also has insights, that he has something to give. Now St Thomas lived in an epoch of a Christianity very sure of itself, and even, one can say, of a latin Catholicism loyal to the Pope as its head, absolutely assured of its legitimacy and its truth. England was certainly no exception. In these circumstances, what could possibly have been an ecumenical dialogue? Heretics were to be ‘exterminated’: that does not mean killed, but driven far away, chased from the land; though the process of ‘exclusion’ could culminate in physical destruction. One thinks of the cathars of Montségur. Listen to this account of an indicative incident. It happened at Cluny, at the beginning of the reign of St Louis, who recounted the episode to Joinville: ‘There was a great conference of clerics and Jews at the monastery of Cluny. There was a knight there . . . , who stood up and leaning on his crutch, asked that the greatest cleric and the greatest master of the Jews he brought to him. And so they were. . . . “Master”, said the knight, “I ask you if you believe that the Virgin Mary, who carried God in her womb and in her arms, gave birth while remaining a virgin and that she is the mother of God”. And the Jew replied that he did not believe a word of it. . . . “Truly”, said the knight, “You will pay for it”. And then he lifted up his crutch and struck the Jew near the ear and knocked him to the ground. And the Jews fled, carrying away their master, badly wounded, and thus ended the conference’.