An important summit of some 100 faith leaders — roughly 50 Jewish rabbis and 50 Christian pastors — was held in Toronto this week to combat rising antisemitism in Canada. The focus was more theological than strategic or political, with an opening address by the peerless professor Rabbi David Novak, Toronto’s gift to all who sincerely desire to speak to God and about God. Novak spoke of Jacques Maritain, the French philosopher who served as France’s post-war ambassador to the Holy See. It was that kind of gathering, where wise men shared the wisdom of the ages — a tonic for today’s toxic twittering and taunting.