The greater pleasures of reading the LRB are thus paid for in a more erratic and limited horizon. - Perry Anderson

Rawls resorted to Hegel in his internal reflections on a constitutional state. On the plane of inter-state relations, Kant remained his philosopher of reference, as the theorist of conditions for a perpetual peace. So too for Habermas. But since Kant failed to envisage the necessary legal framework for a cosmopolitan order, as it started to take shape through the permanent institutions of the United Nations, Habermas, when he came to review the progress made since 1945, also looked towards the philosopher of objective idealism. Measured against the sombre background of the disasters of the first half of the twentieth century, he decided, ‘the World Spirit, as Hegel would have put it, has lurched forward’. As we have seen, Bobbio was responsible for the most pointed appeal to Hegel of all. In one sense, he was more entitled to do so.

Bobbio’s theoretical defence of the distinction between Left and Right, for all its eloquence, may thus be more vulnerable than it appears. If we ask why this should be so, the answer surely lies in the difficulty of constructing an axiology of political values without coherent reference to the empirical social world. Bobbio often writes as if he could separate his ideal taxonomy from contemporary history, but of course he cannot. In practice he admits the political scenery of the present into his account selectively, for the purposes of his argument. But it is in that present that the deeper reasons and limits of his intervention lie.

Historically, even in the greatest minds of the Enlightenment, they could be at variance. Rousseau, the most advanced political thinker of his generation, was emotionally a pietist; Voltaire, politically at ease with a benevolent absolutism, scorned the consolations of Savoyard Christianity. For Timpanaro, Leopardi had represented the possibility of a synthesis beyond either: firm republicanism, unswerving atheism.