Quote by Anaxagoras: “All things were together, infinite in number and in smallness.”

Anaxagoras's cosmology posits that in the beginning, all matter existed as an undifferentiated, infinitely diverse mixture of tiny, indistinguishable particles. This suggests a universe where everything contains a piece of everything else, awaiting separation by an ordering force, the cosmic Mind (Nous).

Anaxagoras presented a complex theory of matter to reconcile the Eleatic doctrine of changeless being with the evidence of sensory change. He posited an initial state of mixture, requiring a distinct principle to initiate order.

Greek philosopher from Clazomenae who lived approximately 500–428 BCE and was the first philosopher to settle in Athens. He proposed that the cosmos was organized by a divine mind (nous) and that all matter was originally mixed together before being differentiated. He was put on trial in Athens for impiety and forced into exile.