Arthur Koestler's concept of a holon describes any entity that is simultaneously:

Society is organized as a nested holarchy of such holons. Here are clear, real-world examples across different scales:

These nested holons illustrate the dual nature Koestler emphasized: each level asserts its own autonomy (self-assertive tendency) while remaining subordinate to the demands of the larger whole (integrative tendency). Healthy social evolution depends on balancing these two tendencies—too much autonomy leads to fragmentation; too much integration leads to totalitarian suppression of difference.