The Spirit of the Laws
Among the books accompanying him as he traveled were Adam Smith's "The Wealth of Nations", Voltaire's "Letters" and, when he was writing the Bolivian constitution, Montesquieu's "The Spirit of the Laws". His Bolivian constitution placed him within the camp of what would become Latin American conservatism in the later nineteenth century. The Bolivian constitution intended to establish a lifelong presidency and a hereditary senate, essentially recreating the British unwritten constitution, as it existed at the time.