Logic is the study of necessary truths and of systematic methods for clearly expressing and rigourously demonstrating such truths. THERE can be no doubt that all our knowledge begins with experience. For how should our faculty of knowledge be awakened into action did not objects affecting our senses partly of themselves produce representations, partly arouse the activity of our understanding to compare these representations, and, by combining or separating them, work up the raw material …showed first 75 words of 1518 total…

…showed last 75 words of 1518 total…to physiological, anatomical and biochemical mechanisms" may be able to tell us "how the brain/mind works," but it "will not be able to tell us what the mind is doing and why. These questions will have to be answered at a higher level of analysis, and using a different language, than that offered by the best of neuroscientific technology." The separation of reason from motivation is fundamental to -- even constitutive of --human cognition.