Invocation of Physiology
“Thus the fundamental attitude of this essay is empiricism, which is now justified as the attitude of the physicist in large part by the inquiry into the physiological origin of our concepts of space, time, and mechanics.”
(5) The principal task of theoretical psychology in making a scientific portrait of human nature is to discover the immediate antecedents of initial descriptive data. These antecedent conditions are located within the biological organism. All psychological explanation must therefore move in the direction of physiology.”