Heraclitus
Both Heraclitus and Eastern philosophies offer deep insights into change and impermanence, though they developed independently within different cultural contexts. Heraclitus' idea of the unity of opposites is similar to Eastern dualism, but with slight differences in emphasis. Heraclitus sees opposites as interconnected expressions of the same force, where their tension drives change. In contrast, Eastern dualism highlights the balance and interdependence of opposites, suggesting that harmony comes from their equilibrium, rather than from conflict.
Logos
In Heraclitus' philosophy, the Logos represents the universal principle of reason, order, or law that governs and unites everything. While change is constant, it operates within this rational framework, maintaining balance in a dynamic world. For Heraclitus, the Logos is the eternal source and pattern of change, harmonizing opposites like life and death or day and night. In later interpretations, the Logos has been connected to scientific ideas of natural laws or philosophical principles of reason. It embodies Heraclitus' vision of a universe in constant flux, yet guided by an unchanging rational order.