"This is an excellent introduction to political philosophy. It is clearly and intuitively written, and it addresses key questions of political philosophy (e.g., political authority and the moral obligation to obey the law, the moral relevance of freedom, equality, and consent for justice, and the moral permissibility of civil disobedience). Van der Vossen very effectively presents an opinionated introduction to these issues, with appropriate flags and questions for controversial issues." - Peter Vallentyne, University of Missouri