 Not only was Spencer less than a “social Darwinist” as we have come to understand social Darwinism, but he was also less unambiguously libertarian as some, such as Eric Mack and Tibor Machan, have made him out to be. Not only his underlying utilitarianism but also the distinction, which he never forswears, between “rights properly so-called” and “political” rights, makes it problematic to read him as what we would call a ‘libertarian’.