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33 Free Philosophy of Law Books [PDF]

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Philosophy of law books ask the questions every legal system has to answer: what law is, why we obey it, and what makes it just. This free collection covers them from ancient Greece to the twentieth century.

You'll find the classics of jurisprudence, from Plato and Kant to Hegel and Bentham. Next to them sit the big debates on natural law, legal realism, punishment and morality.

If you're new to the field, start with Roscoe Pound's introduction and then jump to the school that interests you. Every book downloads free in PDF.

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Introduction to Philosophy of Law Books

If you're new to the philosophy of law, start here. These books explain the basic ideas of jurisprudence and map the main schools of thought.

  • An Introduction to the Philosophy of Law

    Roscoe Pound's Yale lectures on the questions every legal system must answer: what law is for, how judges apply it, and how it handles property, contract and liability. A clear entry point to jurisprudence from one of its most influential teachers.

    Roscoe Pound

    Format: PDF 184 pages 1.07 MB
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  • Jurisprudence

    A classic textbook that defines the core concepts of legal theory: the nature and sources of law, rights and duties, persons, possession and liability. Written for students, with a closing guide to the literature of jurisprudence.

    John W. Salmond

    Format: PDF 493 pages 3.43 MB
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  • The Elements of Jurisprudence

    Holland's Oxford textbook organizes the whole field of law into a single system of rights, persons, acts and remedies. For decades it was the standard first book in jurisprudence courses.

    Thomas Erskine Holland

    Format: PDF 453 pages 13.25 MB
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  • Philosophy of Law Outline

    A compact Princeton study outline of the main theories of law, from Austin's command theory and Hart's positivism to Dworkin and natural law. Useful as a map of the field and a quick review before exams.

    Tommaso Pavone

    Format: PDF 27 pages 0.24 MB
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  • The Philosophy of Law Reconsidered

    A short overview of Western philosophy of law, from Hegel and Kelsen to the place of international law. McBride argues for looking beyond the American and British systems that dominate most textbooks.

    William L. McBride

    Format: PDF 8 pages 0.35 MB
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Classic Philosophy of Law Books

Plato, Kant, Hegel and Bentham wrote the classic philosophy of law books that law schools still teach. Each one asks where law comes from and what gives it authority.

  • Crito

    Socrates waits in prison with an escape plan ready and argues that he must stay and obey the laws that condemned him. Our own Project Aldus edition of the first great dialogue on obedience to the law.

    Plato

    Format: PDF 32 pages 0.74 MB
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  • Laws

    Plato's longest dialogue designs the legal code of a new city, from marriage and property to crime and the role of the gods. Jowett's translation includes a full introduction and analysis of each book.

    Plato

    Format: PDF 637 pages 3.02 MB
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  • The Philosophy of Law

    Kant's theory of right, the first part of the Metaphysics of Morals, covering property, contract, punishment and the authority of the state. It grounds law in freedom rather than in happiness or utility.

    Immanuel Kant

    Format: PDF 329 pages 9.63 MB
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  • Philosophy of Right

    Hegel traces how freedom takes shape in law, morality, the family, civil society and the state. Dyde's translation of one of the most debated books in legal and political philosophy.

    G. W. F. Hegel

    Format: PDF 411 pages 8.12 MB
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  • An Introduction to the Principles of Morals and Legislation

    The founding text of utilitarian legal theory, where Bentham sets out the principle of utility and applies it to offences, punishment and the design of laws. A book that still frames debates on legislation.

    Jeremy Bentham

    Format: PDF 439 pages 28.96 MB
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  • Ancient Law

    Maine follows law from primitive codes and Roman law to modern society and coins the famous movement from status to contract. A founding work of historical jurisprudence.

    Henry Sumner Maine

    Format: PDF 277 pages 1.56 MB
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  • The Struggle for Law

    Jhering's famous lecture argues that rights are won and kept through struggle, and that defending one's own right is a duty to society. Short, forceful and widely read in law schools.

    Rudolf von Jhering

    Format: PDF 205 pages 2.93 MB
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  • The Law

    Bastiat's essay on what law is for: protecting life, liberty and property, and what happens when it is turned into a tool of plunder. A short classic of liberal legal thought.

    Frédéric Bastiat

    Format: PDF 70 pages 0.43 MB
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  • Hegel on Legal Philosophy and Legal History

    Why did Hegel insist that legal philosophy and legal history must stay apart? This paper reconstructs his argument and uses it to shed light on current debates in common law scholarship.

    N. W. Sage

    Format: PDF 24 pages 0.21 MB
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Natural Law Books

Natural law says a just law must follow a moral order above human decisions. From Cicero and Aquinas to Grotius, these books show where the idea of universal rights came from.

  • On the Laws

    Cicero's dialogue on true law as right reason in agreement with nature, binding on all peoples at all times. Barham's translation of the text that carried Stoic natural law into the Roman and Christian tradition.

    Marcus Tullius Cicero

    Format: PDF 97 pages 10.81 MB
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  • Treatise on Law

    Questions 90 to 97 of the Summa Theologica, where Aquinas defines law and distinguishes eternal, natural, human and divine law. The classic statement of natural law theory, in the English Dominican translation.

    Thomas Aquinas

    Format: PDF 83 pages 0.44 MB
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  • The Rights of War and Peace

    Grotius grounds the law of nations in natural law and asks when war is just and how it must be fought. Campbell's translation, with an introduction on Grotius and his influence on international law.

    Hugo Grotius

    Format: PDF 492 pages 2.65 MB
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  • Legal Positivism, Natural Law and the Constitution

    A clear account of the debate between natural law and legal positivism, from Aquinas and Finnis to Hart and Raz, applied to how courts read a written constitution.

    Oran Doyle

    Format: PDF 23 pages 0.23 MB
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  • Positive Law and Natural Law: Han Feizi, Hobbes and Habermas

    A comparative study of how Han Feizi, Hobbes and Habermas relate positive law to natural law, and what that means for legitimacy, rights and global justice today.

    Xunwu Chen

    Format: PDF 23 pages 0.48 MB
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For the legal realists, law is what courts actually do. Holmes, Cardozo and Pound wrote the books that changed how American judges think about their work.

  • The Common Law

    The life of the law has not been logic, it has been experience. Holmes's lectures trace liability, contract and possession through history and laid the ground for American legal realism.

    Oliver Wendell Holmes Jr.

    Format: PDF 382 pages 2.12 MB
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  • The Path of the Law

    Holmes's 1897 address defines law as a prediction of what courts will actually do and separates law from morality. The most cited essay in American jurisprudence.

    Oliver Wendell Holmes Jr.

    Format: PDF 27 pages 0.17 MB
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  • The Nature of the Judicial Process

    A judge explains how judges really decide cases, weighing logic, history, custom and social welfare. Cardozo's Yale lectures remain a classic account of judicial reasoning.

    Benjamin N. Cardozo

    Format: PDF 195 pages 8.55 MB
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  • The Spirit of the Common Law

    Pound examines the forces that shaped the common law, from feudalism and Puritanism to the courts, and calls for a sociological jurisprudence suited to modern society.

    Roscoe Pound

    Format: PDF 257 pages 7.77 MB
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  • The Nature and Sources of the Law

    Gray argues that law is what the courts lay down, while statutes, precedents and custom are only its sources. A key precursor of legal realism, written with unusual clarity.

    John Chipman Gray

    Format: PDF 361 pages 7.15 MB
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Philosophy of Punishment Books

Why does the state have the right to punish? Beccaria and Bentham gave answers that still shape criminal law today.

  • Crimes and Punishments

    Beccaria's treatise against torture and the death penalty, the book that launched modern criminal law reform. This edition adds Farrer's chapters on Beccaria's life and influence.

    Cesare Beccaria

    Format: PDF 173 pages 0.95 MB
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  • The Rationale of Punishment

    Bentham's systematic theory of punishment: when it is justified, how to make it proportionate, and which penalties do more harm than good. The utilitarian answer to why the state punishes.

    Jeremy Bentham

    Format: PDF 471 pages 15.03 MB
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  • The Individualization of Punishment

    Saleilles argues that punishment should fit the offender as well as the offence, a turning point between classical and modern penal philosophy.

    Raymond Saleilles

    Format: PDF 377 pages 12.46 MB
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Law and Morality Books

Does a law have to be moral to count as law? H.L.A. Hart and Lon Fuller made it a central question of modern jurisprudence, and these books carry it into human rights and equality.

From Socrates in his prison cell to judges in American courts, these philosophy of law books trace how people think about justice and the rule of law.

Want more ideas to explore? Browse our full collection of free philosophy books.

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