When an active individual of sound common sense perceives the sordid state of the world, desire to change it becomes the guiding principle by which h… - Max Horkheimer

Leibniz’s theory on the subject as substantia ideans in the sense of a causative agent of decision and acts stands much closer to a materialist interpretation of history than does a philosophy which reduces the thinking subject to the role of subsuming protocol sentences under general propositions and deducing other sentences from them.

The endeavor of scientific research to see events in their more general connection in order to determine their laws, is a legitimate and useful occupation. Any protest against such efforts, in the name of freefom from restrictive conditions, would be fruitless if science did not naïvely identify the abstractions called rules and laws with the actually efficacious forces, and confuse the probability that B will follow A with the actual effort make B follow A.

The world is so possessed by the power of what is and the efforts of adjustment to it, that the adolescent's rebellion, which once fought the father because his practices contradicted his own ideology, can no longer crop up. … Psychologically, the father is … replaced by the world of things.