The idea of the UBI is at least 150 years old. Its two earliest known formulations were inspired by Charles Fourier, the prolific French utopian socialist. In 1848, while Karl Marx was finishing off the Communist Manifesto around the corner, the Brussels-based Fourierist author Joseph Charlier published Solution of the Social Problem, in which he argued for a "territorial dividend" owed to each citizen by virtue of our equal ownership of the nation’s territory. The following year, John Stuart Mill published a new edition of his Principles of Political Economy, which contains a sympathetic presentation of Fourierism ("the most skillfully combined, and with the greatest foresight of objections, of all the forms of Socialism") rephrased so as to yield an unambiguous UBI proposal: "In the distribution, a certain minimum is first assigned for the subsistence of every member of the community, whether capable or not of labour. The remainder of the produce is shared in certain proportions, to be determined beforehand, among the three elements, Labour, Capital, and Talent."

It was seriously discussed by left-wing academics such as G. D. H. Cole and James Meade in England between the World Wars and, via Abba Lerner, it seems to have inspired Milton Friedman’s proposal for a "negative income tax."6 But only since the late-1970s has the idea gained real political currency in a number of European countries, starting with the Netherlands and Denmark.