罗伯特·诺齐克（Robert Nozick，1938-2002） 二十世纪最广为人知、影响最大的哲学家之一，美国哈佛大学教授。因1974年出版第一本著作《无政府，国家和乌托邦》（Anarchy, state, and utopia）一举成名。该书获得美国国家图书奖，并被评为二战后最有影响力的一百本书之一。

另著有《哲学解释》（Philosophical Explanations，1981）、《被省察的人生：哲学沉思》（The Examined Life: Philosophical Meditations，1989）、《个人选择的规范理论》（The Normative Theory of Individual Choice，1990）、《理性的本质》（The Nature of Rationality，1993）、《苏格拉底的困惑》（Socratic Puzzles，1997）、《恒常：客观世界的基本结构》（Invariances: the Structure of Objective World，2001）等，涉及哲学、政治学、伦理学等多个领域。

One of the foremost philosophers of our time, Robert Nozick continues the Socratic tradition of investigation. This volume, which illustrates the originality, force, and scope of his work, also displays Nozick's trademark blending of extraordinary analytical rigor with intellectual playfulness. As such, "Socratic Puzzles" testifies to the great pleasure that both doing and reading philosophy can be. Comprising essays and philosophical fictions, classics and new work, the book ranges from Socrates to W. V. Quine, from the implications of an Israeli kibbutz to the flawed arguments of Ayn Rand. Nozick considers the figure of Socrates himself as well as the Socratic method (why is it a "method" of getting at the truth?). Many of these essays bring classic methods to bear on new questions about choice. How should you choose in a disconcerting situation ("Newcomb's Problem") when your decisions are completely predictable? Why do threats and not offers typically coerce our choices? How do we make moral judgments when we realize that our moral principles have exceptions? Other essays present new approaches to familiar intellectual puzzles, from the stress on simplicity in scientific hypotheses to the tendency of intellectuals to oppose capitalism. As up to date as the latest reflections on animal rights; as perennial as the essentials of aesthetic merit (doggerel by Isaac Newton goes to prove that changing our view of the world won't suffice); as whimsical as a look at how some philosophical problems might appear from God's point of view: these essays attest to the timeliness and timelessness of Nozick's thinking. With a personal introduction, in which Nozick discusses the origins, tools, and themes of his work, "Socratic Puzzles" demonstrates how philosophy can constitute a way of life.