Cumulative Record. Chapter 33: The Concept of the Reflex in the Description of Behavior. Quote 1

The operational analysis of Sherrington’s synapse and the more generalized statement . . . in which I suggested that C.N.S. might be taken to stand for the Conceptual Nervous System, have been interpreted as showing an anti-physiological or anti-neurological bias. I was, however, merely protesting the use of inferences from behavior to explain behavior, while arguing for the solid status of behavioral facts apart from imagined physiological counterparts. (p. 475)