Aristotle (384–322 BC)

Life and career

Aristotle's early life linked him to the medical and administrative traditions of northern Greece. After two decades at the Academy he left Athens, returning later to found his own school, the Lyceum, where he lectured and supervised research. His followers, often called Peripatetics, carried forward his approach of close observation combined with systematic argument.

Works and approach

Only a portion of Aristotle's writings survive; the extant corpus ranges from lecture notes to polished treatises. Major works include the Organon (logic), Metaphysics, Nicomachean Ethics, Politics, Poetics and a substantial set of biological and zoological treatises. Aristotle emphasized empirical investigation, classification of phenomena and rigorous argument—most famously developing syllogistic logic and a theory of causes that sought explanations in form, matter, purpose and agency.

Key contributions

• Logic: systematic treatment of deduction and syllogism.
• Natural history: observational classifications of plants and animals.
• Ethics and politics: virtue ethics focused on character and practical reasoning.
• Metaphysics: investigation of substance, essence and causation.

Influence and legacy

Aristotle's ideas were transmitted through Greek, Latin and Arabic channels and became central to medieval scholasticism, Islamic philosophy and later European thought. His emphasis on systematic classification shaped early science, while his ethical and political writings remain foundational in philosophy and social theory. He is often contrasted with his teacher Plato—Aristotle prioritized particulars and empirical inquiry over Plato's abstract theory of forms.

Notable facts

Many original works are fragmentary or lost; what survives reflects a mix of lecture notes and refined essays. Because of his wide-ranging subject matter and durable methodologies, Aristotle remains a frequent subject of study across disciplines, from philosophy to biology and rhetoric.