The ius gentium, or law of nations, has an important place in legal history. Variously conceived, the law of nations often referred to the code of conduct for dealing with foreign peoples according to their own local, national, or regional standards. As a form of natural law, the ius gentium has often been appealed to as a basis for determining what has been believed everywhere, always, by everyone. It’s an approach used, for instance, with some qualification by C.S. Lewis in the appendix to his book, The Abolition of Man, “Illustrations of the Tao.”




