Physics and psychology are going somewhere, but where they do not know. But... they are traveling from: Democritan permanent particles and the Cartesian mind necessarily aware.... they are both traveling away from the same point of origin and in the same general direction: from the isolation of supposedly permanent "substances" towards the identification of changing relations potentially affecting everything; briefly, from substance to changing relations and structures.

Essay on Atomism: From Democritus to 1960 (1961)