The great Dominican Order of which St Thomas Aquinas is the finest flower may still be, in the minds of many Englishmen, ‘in a special way associated with the Inquisition in Spain. It may therefore come as a surprise to those unacquainted with the work of Francisco de Vitoria, to learn that it was a Spanish Dominican, who died four hundred years ago, who was in his day Europe’s foremost champion of the rule of international law and of human rights. Of Basque origin, Vitoria was an active university teacher at the violent epoch when the Spaniards, having defeated the Moors at home, were founding their American colonies. Vitoria's opinions commanded wide attention among his contemporaries; so much so, that his idealism incurred for him considerable opposition in powerful governmental circles at a time when interests and passions combined to obscure impartial thinking on international affairs.
It may be instructive, in what follows, to compare some of Vitoria’s principles (as set out and expounded in the collections of his works produced and introduced by J. B. Scott for the Carnegie Endowment for international peace) with the principles now to be found in the United Nations Charter, the latest constructive attempt to create an international order.
No doubt the discovery of the Americas by Columbus in 1492, when Vitoria was young, was an event just as stupefying as the discovery of the atomic bomb is to us. The mariner’s astrolobe of 1480 may be compared with the cyclotron of today. Neither of these wonders has prevented international lawyers from facing the future and applying their principles to new problems and unthought-of circumstances.