Cyclical Rise and Fall of Civilizations (Ibn Khaldun)

Ibn Khaldun's theory from the Muqaddimah posits that civilizations follow a predictable generational cycle of approximately 120 years (three to four generations). The first generation conquers through hardship-forged solidarity (asabiyyah). The second generation maintains power but begins enjoying luxury. The third generation, born into comfort, takes prosperity as natural and loses the discipline and cohesion that built it. By the fourth generation, the civilization is hollowed out and vulnerable to displacement by a new group with fresh asabiyyah. This is not moralistic decline narrative but structural analysis: each stage creates conditions that produce the next. Urban sophistication develops arts and science but dissolves martial virtue. Taxation increases to fund luxury, burdening producers and weakening the economic base.

When to use it

When analyzing why once-dominant organizations, nations, or movements are declining. When considering long-term institutional sustainability. When studying historical patterns of rise and fall across cultures. When planning for generational succession in family enterprises or political movements.

How it can help

This model provides a structural framework for analyzing institutional and organizational lifecycles that goes beyond individual leadership or policy decisions. It helps explain why family businesses rarely survive three generations, why political dynasties decay, and why empires that appear invincible collapse from within. For modern organizations, it highlights how the very success that creates institutional comfort also creates the conditions for decline -- and suggests that deliberate renewal requires reintroducing elements of the founding struggle.