

A 14th-century scholar who invented the philosophy of history, arguing that societies rise and fall in predictable cycles of solidarity and decay.
Born in Tunis to a family of Andalusian scholars, Ibn Khaldun lived a life of immense political turbulence, serving various North African rulers as a judge, diplomat, and occasional prisoner. His restless career, which took him from Granada to Cairo, provided the raw material for his revolutionary work, the 'Muqaddimah' (Introduction to History). In it, he broke from simple chronicling to propose a 'science of culture,' analyzing the environmental, economic, and psychological forces that drive civilizations. He identified 'asabiyyah,' or group solidarity, as the engine of state formation and its erosion as the cause of decline. This systematic approach made him a foundational, if isolated, voice in social science centuries before the discipline formally existed.
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He claimed descent from a companion of the Islamic prophet Muhammad.
As a young man, he held a secretarial post under the Merinid sultan in Fez, but was imprisoned for nearly two years on suspicion of plotting.
He personally negotiated with the conqueror Timur (Tamerlane) outside the walls of Damascus in 1401, an encounter he recorded in his autobiography.
“The past resembles the future more than one drop of water resembles another.”