Locke, John Article on the life and work of the influential philosopher.
Lombard, Peter French scholastic theologian of the 12th century, influenced by Abelard.
Lotze, Rudolf Hermann 19th century German philosopher who criticised the pantheism of Hegel.
Lucretius Roman poet and advocate of Epicurean philosophy.
Menippus Third century BCE Greek philosopher and satirist.
Mill, John Stuart 19th leader and prophet of utilitarianism, heir to the Hume-Bentham line, and influential force in modern political theory. Author of On Liberty (1859), and Utilitarianism (1863).
Moral Luck Andrew Latus, St. Francis Xavier University, summarizes the discussion between Thomas Nagel and Bernard Williams on the question: Can luck ever make a moral difference?
Natural Law Standards that govern human behavior objectively derived from the nature of human beings.
Natural Theology Used in the eighteenth and nineteenth centuries to describe knowledge of God drawn from nature.
Neoplatonism The revival of Greek philosophy in 3rd century BCE, led by Plotinus and his disciple, Porphyry. Influenced by both Pythagoras and Plato.
Vienna Circle Organised the development of logical positivism in the 1920s. Included Carnap, Feigl, Frank, Gödel, Hahn, Kraft, Neurath, Waismann. Popper and Wittgenstein also had association with the Vienna Circle.
Virtue Theory View that morality is the development of or virtues.
Voluntarism Theory that God or the ultimate nature of reality is conceived as some form of will.
Warburton, William 18th century Church of England bishop, and critic of the Deists.
Wittgenstein, Ludwig Detailed essay on the life and work of the 20th century philosopher.
Xenophanes Eleatic school, powerful 6th century BCE critic of polytheism.
Xenophon Pupil of Socrates, who contributed to the record of his life.
Academy Description of the philosophical institution founded by Plato, which advocated skepticism in succeeding generations.
Active Powers The capacities of impulse and desire which lead to or determine human action, as described by 18th and 19th century Scottish common sense philosophy.
Aenesidemus Biography of the 1st century philosopher who defended the ten tropes of skepticism.
Anaxagoras Greek philosopher born about 500 BCE, responsible for giving philosophy a home at Athens and the first philosopher to introduce a spiritual principle which gives matter life and form.
Anaxarchus 4th century BCE philosopher of Abdera, from the school of Democritus.
Anaximander Greek philosopher of Miletus, born 611 BCE who thought it unnecessary to fix upon air, water, or fire as the original and primary form of body.
Butler, Joseph 18th century icon of a highly intellectualized theology.
Caird, Edward Nineteenth century Scottish philosopher who was one of the key figures of the idealist movement that dominated British philosophy from 1870 until the mid 1920s.
Social Contract Theory View that morality is based on social agreements that serve the interests of those who make the agreement.
Chrysippus Prolific stoic of Soli, and disciple of Cleanthes.
Carnap, Rudolf Extensive article about his life and work, by Mauro Murzi.
Capital Punishment The issue of capital punishment involves determining whether the execution of criminals is ever justified.
Davidson, Donald Introduction to one of the most significant philosophers concerned with philosophy of mind and action of the 20th/21st century.
Deism, English Explores the deism of Hobbes, Locke, Tindal, and the influence of Hume.
Damon 5th century BCE Pythagorean philosopher of Syracuse.
Cyrenaics Description of the Cyrenaic school of philosophy, which flourished from the 5th-3rd centuries BCE. The Cyrenaics were skeptics and hedonists.
Fichte, Johann Gottlieb One of the major figures in German philosophy in the period between Kant and Hegel.
Freud, Sigmund Lenghty article on the father of psychoanalysis who is generally recognised as one of the most influential and authoritative thinkers of the twentieth century.
German Idealism The German reaction to empiricism, including related theories of Kant, Fichte, Hegel and others.
God, Western Concepts of Internet Encyclopedia of Philosophy article on God from Socrates to Nietzsche.
Gorgias Greek sophist and rhetorician, known as "the Nihilist," born in 483 BCE.
Greek Philosophy The philosophical currents of Ancient Greek philosophy are introduced, from the Presocratic philosophers through to Proclus.
Hamilton, William 19th century exponent of the Scottish common-sense philosophy.
Hegelians, St. Louis 19th century group of amateur American philosophers founded and led by William Torrey Harris.
Helvetius, Claude Adrien One of the 18th century Encyclopedists who held the skeptical and materialistic views common to that school of philosophy.
Hempel, Carl Gustav A leading member of logical positivism, the German philosopher died in 1997.
Heraclitus 5th century BCE. Presocratic Greek philosopher.
Herbert of Cherbury, Edward 17th century historian, poet (brother of George), and philosopher. Sought to determine the nature and standard of truth, and conditions of knowledge. Precursor of the philosophy of Common Sense.
Hippias Hippias was a sophist, a contemporary of Socrates, and an enthusiast for universality.
Hobbes, Thomas 17th century British philosopher. Author of Leviathan (1651).
Hodgson, Shadworth Follower of Kant, founder of the Aristotelian Society.
Humanism Brief article on Erasmus and the Italian humanist movement.
Hume, David Enormously influential 18th century Scottish philosopher. Author of Treatise of Human Nature (1739-1740).
Husserl, Edmund Leader of the German phenomenological movement.
Identity Theory Form of monistic materialism which maintains that mental states and brain activities are identical.
Interventionism Examines the nature and justifications of interfering with another polity or choices made by individuals.
Encyclopedists Group of French philosophers and men of letters who collaborated in the production of the famous Encyclopedie.
Stoic Philosophy of Mind Description of the philosophy of Mind of the Stoics, including the relationship between mind and body, perception, action-theory, and emotion.
Rousseau, Jean Jacques 18th century French author of the Social Contract, influential during the French Revolution.