"Matter," said Schopenhauer, "is the objective correlative of pure understanding."

The social, I add, is the subjective disposition of brute obedience.*

Thus, matter is the objective correlative of the subjective disposition of society.

Marx may have been on to something.

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*The subject is to the object as passion is to reason. Obedience is to understanding, as the social is to the material. Relations are to positions as knowledge to power.