In logic, the law of non-contradiction (LNC) states that contradictory propositions cannot both be true in the same sense at the same time, e. g. the two propositions "p is the case" and "p is not the case" are mutually exclusive. Formally, this is expressed as the tautology ¬(p ∧ ¬p). The law is not to be confused with the law of excluded middle which states that at least one, "p is the case" or "p is not the case", holds.
Natural law is a system of law based on a close observation of human nature, and based on values intrinsic to human nature that can be deduced and applied independently of positive law. According to the theory of law called jusnaturalism, all people have inherent rights, conferred not by act of legislation but by "God, nature, or reason." Natural law theory can also refer to "theories of ethics, theories of politics, theories of civil law, and theories of religious morality."
Political philosophy or political theory is the philosophical study of government, addressing questions about the nature, scope, and legitimacy of public agents and institutions and the relationships between them. Its topics include politics, liberty, justice, property, rights, law, and the enforcement of laws by authority: what they are, if they are needed, what makes a government legitimate, what rights and freedoms it should protect, what form it should take, what the law is, and what duties citizens owe to a legitimate government, if any, and when it may be legitimately overthrown, if ever.
Thomas Hobbes was an English philosopher. Hobbes is best known for his 1651 book Leviathan, in which he expounds an influential formulation of social contract theory. In addition to political philosophy, Hobbes contributed to a diverse array of other fields, including history, jurisprudence, geometry, theology, and ethics, as well as philosophy in general. He is considered to be one of the founders of modern political philosophy.
Aristocracy is a form of government that places power in the hands of a small, privileged ruling class, the aristocrats. The term derives from the Greek: αριστοκρατία, meaning 'rule of the best'.
In moral and political philosophy, the social contract is an idea, theory or model that usually, although not always, concerns the legitimacy of the authority of the state over the individual. Conceptualized in the Age of Enlightenment, it is a core concept of constitutionalism, while not necessarily convened and written down in a constituent assembly and constitution.
Leviathan or The Matter, Forme and Power of a Commonwealth Ecclesiasticall and Civil, commonly referred to as Leviathan, is a book written by Thomas Hobbes (1588–1679) and published in 1651. Its name derives from the biblical Leviathan. The work concerns the structure of society and legitimate government, and is regarded as one of the earliest and most influential examples of social contract theory. Written during the English Civil War (1642–1651), it argues for a social contract and rule by an absolute sovereign. Hobbes wrote that civil war and the brute situation of a state of nature could be avoided only by a strong, undivided government.
In Ethics and political philosophy, in social contract theory, religion, and international law, the term state of nature describes the hypothetical way of life that existed before people organised themselves into societies. Philosophers of the state of nature theory propose that there was a historical period before societies existed, and seek answers to the questions: "What was life like before civil society?", "How did government emerge from such a primitive start?", and "What are the hypothetical reasons for entering a state of society by establishing a nation-state?".
Carl Schmitt was a German jurist, political theorist, and prominent member of the Nazi Party. Schmitt wrote extensively about the effective wielding of political power. An authoritarian conservative theorist, he is noted as a critic of parliamentary democracy, liberalism, and cosmopolitanism. His work has been a major influence on subsequent political theory, legal theory, continental philosophy, and political theology, but its value and significance are controversial, mainly due to his intellectual support for and active involvement with Nazism.
Negative liberty is freedom from interference by other people. Negative liberty is primarily concerned with freedom from external restraint and contrasts with positive liberty. The distinction originated with Bentham, was popularized by T. H. Green and Guido De Ruggiero, and is now best known through Isaiah Berlin's 1958 lecture "Two Concepts of Liberty".
Sir Robert Filmer was an English political theorist who defended the divine right of kings. His best known work, Patriarcha, published posthumously in 1680, was the target of numerous Whig attempts at rebuttal, including Algernon Sidney's Discourses Concerning Government, James Tyrrell's Patriarcha Non Monarcha and John Locke's Two Treatises of Government. Filmer also wrote critiques of Thomas Hobbes, John Milton, Hugo Grotius and Aristotle.
Early modern philosophy The early modern era of philosophy was a progressive movement of Western thought, exploring through theories and discourse such topics as mind and matter, is a period in the history of philosophy that overlaps with the beginning of the period known as modern philosophy. It succeeded in the medieval era of philosophy. Early modern philosophy is usually thought to have occurred between the 16th and 18th centuries, though some philosophers and historians may put this period slightly earlier. During this time, influential philosophers included Descartes, Locke, Hume, and Kant, all of whom contributed to the current understanding of philosophy.
Mixed government is a form of government that combines elements of democracy, aristocracy and monarchy, ostensibly making impossible their respective degenerations which are conceived as anarchy, oligarchy and tyranny. The idea was popularized during classical antiquity in order to describe the stability, the innovation and the success of the republic as a form of government developed under the Roman constitution.
The Republic is a Socratic dialogue, authored by Plato around 375 BCE, concerning justice, the order and character of the just city-state, and the just man. It is Plato's best-known work, and one of the world's most influential works of philosophy and political theory, both intellectually and historically.
While the term "political science" as a separate field is a rather late arrival in terms of social sciences, analyzing political power and the effects that it had on history has been occurring for centuries. However, the term "political science" was not always distinguished from political philosophy, and the modern discipline has a clear set of antecedents including moral philosophy, political economy, political theology, history, and other fields concerned with normative determinations of what ought to be and with deducing the characteristics and functions of the ideal state. Political science as a whole occurs all of the world in certain disciplines, but can also be lacking in other specific aspects of the term.
Absurdity is a state or condition of being extremely unreasonable, meaningless or unsound in reason so as to be irrational or not taken seriously. "Absurd" is an adjective used to describe absurdity, e.g., "Tyler and the boys laughed at the absurd situation." It derives from the Latin absurdum meaning "out of tune". The Latin surdus means "deaf", implying stupidity. Absurdity is contrasted with being realistic or reasonable In general usage, absurdity may be synonymous with fanciful, foolish, bizarre, wild or nonsense. In specialized usage, absurdity is related to extremes in bad reasoning or pointlessness in reasoning; ridiculousness is related to extremes of incongruous juxtaposition, laughter, and ridicule; and nonsense is related to a lack of meaningfulness. Absurdism is a concept in philosophy related to the notion of absurdity.
The phrase "scientia potentia est" is a Latin aphorism meaning "knowledge is power", commonly attributed to Sir Francis Bacon. The expression "ipsa scientia potestas est" occurs in Bacon's Meditationes Sacrae (1597). The exact phrase "scientia potentia est" was written for the first time in the 1668 version of Leviathan by Thomas Hobbes, who was a secretary to Bacon as a young man. The related phrase "sapientia est potentia" is often translated as "wisdom is power".
Pleonexia, sometimes called pleonexy, originating from the Greek πλεονεξία, is a philosophical concept which roughly corresponds to greed, covetousness, or avarice, and is strictly defined as "the insatiable desire to have what rightfully belongs to others."
Leviathan and the Air-Pump: Hobbes, Boyle, and the Experimental Life is a book by Steven Shapin and Simon Schaffer. It examines the debate between Robert Boyle and Thomas Hobbes over Boyle's air-pump experiments in the 1660s. In 2005, Shapin and Schaffer were awarded the Erasmus Prize for this work.
The body politic is a polity—such as a city, realm, or state—considered metaphorically as a physical body. Historically, the sovereign is typically portrayed as the body's head, and the analogy may also be extended to other anatomical parts, as in political readings of Aesop's fable of "The Belly and the Members". The image originates in ancient Greek philosophy, beginning in the 6th century BC, and was later extended in Roman philosophy. Following the high and late medieval revival of the Byzantine Corpus Juris Civilis in Latin Europe, the "body politic" took on a jurisprudential significance by being identified with the legal theory of the corporation, gaining salience in political thought from the 13th century on. In English law the image of the body politic developed into the theory of the king's two bodies and the Crown as corporation sole.
