 The reasoning that underpins this commitment can be reconstructed from Marx’s engagement with the radical political tradition that he called “utopian socialism”, and whose founding triumvirate were Charles Fourier (1772–1837), Henri Saint-Simon (1760–1825), and Robert Owen (1771–1858). Note that the distinction between Marxian socialism and utopian socialism is not an exhaustive one. Marx happily allows that there are socialists who are neither Marxian nor Utopian; for example, the “feudal socialists” discussed in the Communist Manifesto.