Ibn Khaldun
Arab historian, philosopher, and social scientist whose Muqaddimah laid foundations for modern historiography and sociology.
Who or what
Abd al-Rahman ibn Muhammad ibn Khaldun (1332–1406) was an Arab historian, philosopher, economist, and social scientist from Tunis.
His masterpiece, the "Muqaddimah" (Prolegomenon), is the introduction to his universal history and is considered the first work of scientific historiography and sociology.
Why it mattered
Ibn Khaldun developed a theory of history based on social cohesion (asabiyyah), analyzing the rise and fall of civilizations with a systematic methodology.
He is often called the father of modern historiography, sociology, and economics — anticipating concepts like the labor theory of value and supply-and-demand.
Key works and moments
He analyzed how nomadic Bedouin tribes with strong asabiyyah conquer settled civilizations but gradually lose their cohesion, leading to decline.
His cyclical theory of history: a dynasty lasts about 3-4 generations (roughly 120 years) before decay sets in.
Further detail
The Muqaddimah has six parts: human civilization, Bedouin society, dynasties and rulership, sedentary civilization, crafts and livelihoods, and the sciences.
He introduced the concept of asabiyyah (group solidarity) as the driving force of historical change.
Legacy
His ideas influenced modern historians like Toynbee and sociologists like Durkheim and Weber.
His interdisciplinary methodology anticipates modern social science by 500 years.
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Assembled from the ReLU.chat curated knowledge base. These explanations are concise on purpose; check the sources for anything important.