Robert Nozick
American philosopher (1938-2002), best known for Anarchy, State, and Utopia (1974) and the Experience Machine thought experiment. Harvard professor and leading libertarian political philosopher.
Robert Nozick (1938–2002) was an American philosopher and Harvard professor, one of the most influential political philosophers of the 20th century. Born in Brooklyn, New York, he earned his Ph.D. from Princeton under Carl Hempel and became one of the youngest full professors at Harvard at age 30, eventually holding the Joseph Pellegrino University Professorship. His most famous work, *Anarchy, State, and Utopia* (1974), is a libertarian response to John Rawls's *A Theory of Justice* (1971). It argues for a minimal state limited to protection against force, theft, and fraud. The book won the National Book Award and remains a foundational text in political philosophy. Nozick is also widely known for the The Experience Machine Thought Experiment thought experiment (from the same book), which challenges ethical hedonism by asking whether we would plug into a machine providing any desired experience. Most people refuse, which Nozick takes as evidence that we value reality, agency, and authentic personhood beyond mere subjective pleasure. Other major works include *Philosophical Explanations* (1981), *The Examined Life* (1989), and *Invariances* (2001). His philosophical range extended across epistemology, decision theory, and the philosophy of personal identity.