The 85 essays that make up The Federalist Papers' clearly demonstrate the vital importance of the art of persuasion. Written between 1787 and 1788 by three of the "Founding Fathers" of the United States, the Papers were written with the specific intention of convincing Americans that it was in their interest to back the creation of a strong national government, enshrined in a constitution - and they played a major role in deciding the debate between proponents of a federal state, with its government based on central institutions housed in a single capital, and the supporters of states' rights. The papers' authors - Alexander Hamilton, James Madison, and John Jay - believed that centralised government was the only way to knit their newborn country together, while still preserving individual liberties. Closely involved with the politics of the time, they saw a real danger of America splintering, to the detriment of all its citizens. Given the fierce debates of the time, however, Hamilton, Jay and Madison knew they had to persuade the general public by advancing clear, well-structured arguments - and by systematically engaging with opposing points of view. By enshrining checks and balances in a constitution designed to protect individual liberties, they argued, fears that central government would oppress the newly free people of America would be allayed. The constitution that the three men helped forge governs the US to this day, and it remains the oldest written constitution, still in force, anywhere in the world.

John Locke's 1689 Two Treatises of Government is a key text in the history of political theory - one whose influence remains marked on modern politics, the American Constitution and beyond. Two Treatises is more than a seminal work on the nature and legitimacy of government. It is also a masterclass in two key critical thinking skills: evaluation and reasoning. Evaluation is all about judging and assessing arguments - asking how relevant, adequate and convincing they are. And, at its heart, the first of Locke's two treatises is pure evaluation: a long and incisive dissection of a treatise on the arguments in Sir Robert Filmer's Patriarcha. Filmer's book had defended the doctrine that kings were absolute rulers whose legitimacy came directly from God (the so-called "divine right of kings"), basing his arguments on Biblical explanations and evidence. Locke carefully rebutted Filmer's arguments, on their own terms, by reference to both the Bible and to recorded history. Finding Filmer's evidence either to be insufficient or unacceptable, Locke concluded that his argument for patriarchy was weak to the point of invalidity. In the second of Locke's treatises, the author goes on to construct his own argument concerning the sources of legitimate power, and the nature of that power. Carefully building his own argument from a logical consideration of man in "the state of nature", Locke creates a convincing argument that civilised society should be based on natural human rights and the social contract.

John Rawls's A Theory of Justice is one of the most influential works of legal and political theory published since the Second World War. It provides a memorably well-constructed and sustained argument in favour of a new (social contract) version of the meaning of social justice. In setting out this argument, Rawls aims to construct a viable, systematic doctrine designed to ensure that the process of maximizing good is both conscious and coherent - and the result is a work that foregrounds the critical thinking skill of reasoning. Rawls's focus falls equally on discussions of the failings of existing systems - not least among them Marxism and Utilitarianism - and on explanation of his own new theory of justice. By illustrating how he arrived at his conclusions, and by clearly explaining and justifying his own liberal, pluralist values, Rawls is able to produce a well structured argument that is fully focused on the need to persuade. Rawls explicitly explains his goals. He discusses other ways of conceptualizing a just society and deals with counter-arguments by explaining his objections to them. Then, carefully and methodically, he defines a number of concepts and tools-"thought experiments"-that help the reader to follow his reasoning and test his ideas. Rawls's hypothesis is that his ideas about justice can be universally applied: they can be accepted as rational in any society at any time.

Thomas Hobbes is a towering figure in the history of modern thought and political philosophy. He remains best remembered for his 1651 treatise on government, Leviathan, a work that shows at the very best the reasoning skills of a deeply original and creative thinker. Creative thinking is all about taking a novel approach to questions and problems - showing them in a new light. When Hobbes was writing Leviathan, the standard approach to understanding (and advocating for) monarchical government was to argue, using Christian theology, that kings and queens gained their power and legitimacy from God. At a time of intense political turmoil in England - with civil war raging from 1642-51 - Hobbes took the original step of basing a political theory upon reason alone, and focusing on human nature. His closely-reasoned arguments made the book a controversial best-seller across Europe at the time of its publication, and it has remained a cornerstone of political theory ever since. Though Hobbes argued for government by an absolute monarch, many of his ideas and precepts helped form modern liberal ideas of government, influencing, among others, the American Constitution.

Are Western and Islamic political and constitutional ideas truly predestined for civilizational clash? In order to understand this controversy The Concert of Civilizations begins by deriving and redefining a definition of constitutionalism that is suitable for comparative, cross-cultural analysis. The rule of law, reflection of national character, and the clear delineation and limitation of governmental power are used as lenses through which thinkers like Cicero, Montesquieu, and the authors of The Federalist Papers can be read alongside al-Farabi, ibn Khaldun, and the Ottoman Tanzimat decrees. Bridging the civilizational divide is a chapter comparing the Magna Carta with Muhammad'sConstitution of Medina, as both documents can be seen as foundational within their traditions. For the first time in political theory, this text also provides a sustained, detailed analysis of Khayr al-Din al-Tunisi's book The Surest Path, which explains his fusion of Muslim and Western ideas in his writing of Tunisia's first modern constitution, which is also the first constitution for a majority-Muslim state. Finally, the book discusses the Arab Spring through a brief overview of the revolutions in Egypt, Libya, and Tunisia, and offers some early thoughts about Tunisia's uniquely successful revolution.

Thomas Hobbes is a towering figure in the history of modern thought and political philosophy. He remains best remembered for his 1651 treatise on government, Leviathan, a work that shows at the very best the reasoning skills of a deeply original and creative thinker.

Creative thinking is all about taking a novel approach to questions and problems – showing them in a new light. When Hobbes was writing Leviathan, the standard approach to understanding (and advocating for) monarchical government was to argue, using Christian theology, that kings and queens gained their power and legitimacy from God. At a time of intense political turmoil in England – with civil war raging from 1642-51 – Hobbes took the original step of basing a political theory upon reason alone, and focusing on human nature. His closely-reasoned arguments made the book a controversial best-seller across Europe at the time of its publication, and it has remained a cornerstone of political theory ever since. Though Hobbes argued for government by an absolute monarch, many of his ideas and precepts helped form modern liberal ideas of government, influencing, among others, the American Constitution.

John Locke’s 1689 Two Treatises of Government is a key text in the history of political theory – one whose influence remains marked on modern politics, the American Constitution and beyond.

Two Treatises is more than a seminal work on the nature and legitimacy of government. It is also a masterclass in two key critical thinking skills: evaluation and reasoning. Evaluation is all about judging and assessing arguments – asking how relevant, adequate and convincing they are. And, at its heart, the first of Locke’s two treatises is pure evaluation: a long and incisive dissection of a treatise on the arguments in Sir Robert Filmer’s Patriarcha. Filmer’s book had defended the doctrine that kings were absolute rulers whose legitimacy came directly from God (the so-called “divine right of kings”), basing his arguments on Biblical explanations and evidence. Locke carefully rebutted Filmer’s arguments, on their own terms, by reference to both the Bible and to recorded history. Finding Filmer’s evidence either to be insufficient or unacceptable, Locke concluded that his argument for patriarchy was weak to the point of invalidity.

In the second of Locke’s treatises, the author goes on to construct his own argument concerning the sources of legitimate power, and the nature of that power. Carefully building his own argument from a logical consideration of man in “the state of nature”, Locke creates a convincing argument that civilised society should be based on natural human rights and the social contract.

John Rawls's A Theory of Justice is one of the most influential works of legal and political theory published since the Second World War. It provides a memorably well-constructed and sustained argument in favour of a new (social contract) version of the meaning of social justice. In setting out this argument, Rawls aims to construct a viable, systematic doctrine designed to ensure that the process of maximizing good is both conscious and coherent – and the result is a work that foregrounds the critical thinking skill of reasoning. Rawls's focus falls equally on discussions of the failings of existing systems – not least among them Marxism and Utilitarianism – and on explanation of his own new theory of justice. By illustrating how he arrived at his conclusions, and by clearly explaining and justifying his own liberal, pluralist values, Rawls is able to produce a well structured argument that is fully focused on the need to persuade.

Rawls explicitly explains his goals. He discusses other ways of conceptualizing a just society and deals with counter-arguments by explaining his objections to them. Then, carefully and methodically, he defines a number of concepts and tools―“thought experiments”―that help the reader to follow his reasoning and test his ideas. Rawls’s hypothesis is that his ideas about justice can be universally applied: they can be accepted as rational in any society at any time.

The 85 essays that maker up The Federalist Papers’ clearly demonstrate the vital importance of the art of persuasion. Written between 1787 and 1788 by three of the “Founding Fathers” of the United States, the Papers were written with the specific intention of convincing Americans that it was in their interest to back the creation of a strong national government, enshrined in a constitution – and they played a major role in deciding the debate between proponents of a federal state, with its government based on central institutions housed in a single capital, and the supporters of states’ rights.

The papers’ authors – Alexander Hamilton, James Madison, and John Jay – believed that centralised government was the only way to knit their newborn country together, while still preserving individual liberties. Closely involved with the politics of the time, they saw a real danger of America splintering, to the detriment of all its citizens.

Given the fierce debates of the time, however, Hamilton, Jay and Madison knew they had to persuade the general public by advancing clear, well-structured arguments – and by systematically engaging with opposing points of view. By enshrining checks and balances in a constitution designed to protect individual liberties, they argued, fears that central government would oppress the newly free people of America would be allayed.

The constitution that the three men helped forge governs the US to this day, and it remains the oldest written constitution, still in force, anywhere in the world.