Responsible intellectual endeavour in the public sphere was once a vibrant part of our public life: not to promote ‘certain, clear, and strong’ action, as Martin Heidegger wrote in support of Hitler, but to generate just and reasonable possibilities and pathways for consideration. Now this sphere is largely abandoned to the Manichean preachings of blogging pundits, radio talk-show hosts, product-pushing podcasters, and television evangelicals. These people rarely do what responsible intellectuals ought to do. ‘The intellectual,’ explained France’s Raymond Aron 60 years ago, ‘must try never to forget the arguments of the adversary, or the uncertainty of the future, or the faults of one’s own side, or the underlying fraternity of ordinary men everywhere.’