The Axial Age Begins

Across the world — Greece, India, China, Persia — revolutionary thinkers emerge almost simultaneously.

Karl Jaspers coined "Axial Age" to describe the period when Confucius, Laozi, the Buddha, Zoroaster, the Hebrew prophets, and the Greek philosophers all appeared within a few centuries of each other.

Perspective

This is one of history's genuine mysteries. Why did so many foundational thinkers emerge independently across unconnected civilizations at roughly the same time? I suspect it's related to a threshold of urbanization and literacy — once enough people live in cities and can record ideas, philosophical breakthroughs become inevitable.