Philosophy

Arthur Schopenhauer: life, philosophy and influence Arthur Schopenhauer German philosopher Arthur Schopenhauer (1788–1860) developed a metaphysics of the will and a pessimistic ethic influenced by Kant, Plato and Indian thought; he left a lasting impac…

Augustine Augustine is a given name and historical epithet best known for Augustine of Hippo, an influential Church Father. The name also identifies other religious leaders, modern figures,…

Autonomy: concept, forms, history, and practical significance Autonomy Autonomy is the capacity for self-governance and independent decision-making. This article outlines its core elements, types, historical accounts, applications in ethics, law and m…

Avicenna (Ibn Sīnā): medieval Persian physician and philosopher Avicenna Avicenna (c.980–1037), known as Ibn Sīnā, was a Persian polymath whose medical and philosophical encyclopedias shaped Islamic and European thought for centuries.

Baruch Spinoza: Life, Philosophy, and Influence Baruch Spinoza Dutch philosopher Baruch Spinoza (1632–1677) developed a systematic rationalist metaphysics linking ethics, theology and politics; his work reshaped modern views of God, nature and…

Begging the question (petitio principii): definition, examples, and detection Begging the question Begging the question is a logical fallacy in which a conclusion is assumed in its premises, producing circular support; also distinct from casual uses of the phrase that mean "rais…

Being and Nothingness: Jean‑Paul Sartre’s Phenomenological Ontology Being and Nothingness A clear, concise overview of Jean‑Paul Sartre’s 1943 work Being and Nothingness: its aims, main concepts (being‑in‑itself, being‑for‑itself, bad faith), method, historical context…

Bertrand Russell: Philosopher, Logician and Public Intellectual Bertrand Russell British philosopher and mathematician (1872–1970) whose work shaped modern logic, analytic philosophy and public debate; Nobel Prize laureate in 1950 and a prominent social activis…

Bigotry: intolerance rooted in prejudice Bigotry Bigotry is persistent intolerance of beliefs, identities or lifestyles unlike one's own, typically based on prejudice. This article explains its features, history, common forms, an…

Blank slate (tabula rasa): idea, history, and modern perspectives Blank slate An encyclopedic overview of the 'blank slate' or tabula rasa: origins in philosophy, Locke's formulation, later advocates, scientific challenges from biology and psychology, and co…

The Blind Men and the Elephant: Parable, Meaning, and Uses Blind men and an elephant An encyclopedic overview of the parable 'The Blind Men and the Elephant': its narrative, origins, variants, meanings, and modern uses as a metaphor for partial perspective and the…

Blood and soil (Blut und Boden): idea, history and cultural impact Blood and soil Ideology linking ancestry and land, originating in 19th-century European völkisch thought, later central to Nazi policies and cultural programs; continues to appear in modern extre…

Bodhicitta: the altruistic intention in Mahayana Buddhism Bodhicitta Bodhicitta is the compassionate resolve to attain awakening for the sake of all beings. It is central to Mahayana practice, describing both an intention and a path of ethical and m…

Bodily integrity Bodily integrity is the ethical and legal principle that individuals have exclusive authority over their own bodies, protecting physical and mental autonomy against nonconsensual i…

Bohemianism: Origins, Lifestyle, Cultural Influence, and Modern Forms Bohemianism Bohemianism is a cultural and social phenomenon tied to unconventional artistic lifestyles. Originating in 19th‑century Paris, it denotes alternative values, creative communities,…

Brights (naturalistic worldview movement) Brights A social movement that promotes the neutral label "bright" for people who hold naturalistic worldviews, seeking to remove stigma associated with terms like atheist and to encourage…

Buddhism: origins, beliefs, schools, and global influence Buddhism Buddhism is a spiritual tradition founded on the teachings of Siddhartha Gautama (the Buddha). This article summarizes its core teachings, historical spread, main schools, practice…

Bushidō: The Way of the Warrior — origins, principles, and influence Bushido Bushidō, literally “Way of the Warrior,” is the samurai ethical tradition emphasizing honor, loyalty, and discipline. This article covers its origins, core virtues, practices, hist…

Buttered cat paradox: a humorous thought experiment Buttered cat paradox A lighthearted thought experiment that combines the adages “cats land on their feet” and “buttered toast lands buttered-side down” to create a playful paradox and cultural meme.

Carpe diem: meaning, origin, and cultural influence Carpe diem Carpe diem is a Latin exhortation to make the most of the present. This article explains its origin in Horace, linguistic nuance, philosophical interpretations, and modern cultural…

Categorical Imperative: Kant’s Principle of Moral Law Categorical imperative An accessible overview of Immanuel Kant’s categorical imperative: its definitions, main formulations, relation to maxims and hypothetical imperatives, historical context, applicati…

Causality: Understanding Causes, Effects, and Causal Reasoning Causality An overview of causality: what it means, how it is analyzed, its history, common distinctions like correlation vs causation, and applications in science, law, and technology.

Chaos: unpredictability, disorder, and the scientific theory Chaos Overview of chaos as disorder and deterministic unpredictability: definitions, characteristics, historical development, examples in nature and science, and common misconceptions.

Charisma: Nature, Origins, and Role in Influence and Leadership Charisma Charisma is a personal quality that attracts and motivates others. This article explains its meaning, components, history, psychological views, uses in leadership and culture, and…

Cherry picking (selective evidence selection) Cherry picking Cherry picking is the selective use of evidence to support a claim while ignoring contrary data; it appears in science, medicine, media and everyday argument and is linked to bias…

Childfree: choosing a life without children Childfree Overview of the childfree identity: definitions, motives, history, social trends, differences from childless, and cultural implications.

Chivalry: origins, medieval code, and modern meanings Chivalry Chivalry began as a medieval system linking mounted warfare and knighthood and evolved into an ideal of honor, courtesy and courtly love; it remains influential and contested in mo…

Choice: decision-making, types, and significance Choice An overview of choice as the act of selecting among alternatives, its types, historical study, everyday examples, and its role in economics, ethics, and psychology.

Christian apologetics: aims, methods, history and contemporary practice Christian apologetics Overview of Christian apologetics: its purpose, main approaches, historical development, typical arguments, and how it differs from related disciplines within Christianity.

Christian de Quincey: Philosopher, Author, and Teacher of Consciousness Christian de Quincey Overview of Christian de Quincey, Ph.D., his work on consciousness, teaching roles in the US and Europe, key themes in his writing, and his role in bridging science and spiritualit…

Zhuangzi (Chuang Tzu): life, teachings, and the classic text Chuang Tzu An accessible account of Zhuangzi (Chuang Tzu), the Taoist thinker and the Zhuangzi text, its themes (spontaneity, wu wei, relativism), famous parables, and its influence in Chines…

Civil Disobedience (Thoreau) — essay on conscience and resistance Civil Disobedience (Thoreau) Henry David Thoreau's 1849 essay arguing that individuals should refuse to obey unjust laws, endorsing nonviolent resistance and moral conscience over compliance with government.

Classical elements (Greek theory and comparative traditions) Classical element Overview of the classical elements: origins in ancient Greek thought, their qualities and medical links, later use in alchemy and astrology, and comparisons with Chinese and Indian…

Clinamen: the Epicurean swerve and its philosophical legacy Clinamen Clinamen is the ancient idea of an unpredictable swerve in atomic motion, introduced in Epicurean cosmology and famously described by Lucretius. It explains collision, contingency,…

Collectivism: principles, varieties, history, and societal roles Collectivism Collectivism prioritizes group goals, social obligations, and common goods over individual autonomy. This article explains its principles, historical development, types, applicatio…

Commensurability: comparing theories in philosophy of science and mathematics Commensurability Commensurability describes whether two frameworks can be meaningfully compared. Used in philosophy of science and mathematics, it contrasts comparable (commensurable) with incommen…

Compassion: Meaning, Origins, and Role in Human Life Compassion Compassion is the motivated concern to relieve another's suffering. This article explains its nature, history, distinctions from related emotions, benefits, examples, and limits.

Conflict: causes, types, history, consequences and resolution Conflict An overview of conflict: definitions, forms, historical development, typical consequences, and common ways to manage or resolve disputes across individuals, groups, and societies.

Conflict resolution: concepts, methods, and applications Conflict resolution Overview of the ideas and processes used to manage and settle interpersonal, organizational, and international conflicts; methods, history, examples, and distinctions between resol…

Confucianism: Origins, Principles, and Historical Influence Confucianism Confucianism is a Chinese intellectual tradition based on Confucius's teachings. It emphasizes ethics, family, ritual, education and responsible governance and has shaped East Asia…

Confucius: Chinese Teacher and Philosopher (551–479 BC) Confucius Confucius (Kong Qiu) was a Chinese teacher, thinker and political adviser whose moral philosophy and emphasis on ritual, education and good governance shaped East Asian cultures fo…

Consequentialism: the ethical view that actions are judged by outcomes Consequentialism Consequentialism holds that the rightness of actions depends on their consequences. This article explains its varieties, history, applications, examples, and common objections.

Continuum A continuum is a seamless sequence or structure without abrupt jumps, used in mathematics, physics, philosophy, and everyday descriptions of gradual change.

Continuum (theory) Overview of the continuum concept as used in mathematics, physics, linguistics and other fields, explaining continuous vs discrete, major types, history, and practical significance…

Cosmological Argument Philosophical arguments that infer a first cause or necessary being to explain why anything exists, including major variants, history, and common objections.

Cosmopolitan: meanings, history, and modern uses Cosmopolitan Cosmopolitan denotes a worldly outlook, a philosophical stance favoring global citizenship and human-rights norms, and several cultural uses including a magazine and a cocktail.

Courage: meaning, types, history, and significance Courage Courage is acting despite fear or risk. This article outlines its meanings, types (physical, moral, psychological), historical perspectives, common examples, and distinctions from…

Critical analysis: principles, methods, and applications Critical analysis An introductory guide to critical analysis: what it is, core skills and methods, historical context, practical uses, and how it differs from summary or opinion.