Robert Nozick, 1938-2002, was a professor at Harvard whose best known book is Anarchy, State, and Utopia (1974) – a libertarian answer to Rawls’ A Theory of Justice (1971). Murray Rothbard, 1926-1995, wrote The Ethics of Liberty as his main political philosophy work.

John Stuart Mill, 1806-1873, was the most famous classical liberal. Herbert Spencer, 1820-1903, was a prominent classical liberal political theorist of the Victorian era. Lysander Spooner, 1808-1887, was an American individualist anarchist and abolitionist.

Jean-Jacques Rousseau, 1712-1778, influenced the French Revolution with his political philosophy and his social contract theory. The perspective of many of today’s environmentalists can be traced back to Rousseau, espousing that all degenerates in man’s hands. The Social Contract (1972), his most...