Abstract

This chapter has two aims.* First, it exegetes Aquinas’ notion of peace (pax) in his Commentary on the Gospel of St. John (14:7), which is centred around the definition, kinds and possibility of a perfected peace, as well as how love (amor) is the cause of peace. Second, rather than defending Aquinas’ position at length, I take the more humble task to defend one attractive, plausible feature of Aquinas’ position, showing how it reveals Medieval wisdom for the establishment of modern peace. The position is two-fold: First, Aquinas’ position – at least how Josef Pieper (1904–97) reads him – that love is essentially the affirmation of the goodness of the existence of the other person. I read this as an empirically-supported, plausible source of peace. This thesis also reiterates Aquinas’ rejection of monadic theories of peace which hold that peace need only be outward (exterius) e.g., establishing socio-political peace by fighting for human rights, and not inward (interius) e.g., peace with oneself by cultivating the inner life (14, 7, 1962). Second, Aquinas’ position that love, and not other candidates e.g., tolerance, as the cause of peace, is an alternative, plausible position that merits critical attention.