Note 39 — Chapter III · PLEASURE.
Reading edition
This also seems to be the view adopted by Rutgers Marshall (op. cit.). In the first place, he always considers “pleasure-pains” as connected states, pleasure being experienced “whenever the physical activity coincident with the psychic state to which the pleasure is attached involves the use of surplus stored force—the resolution of surplus potential into actual energy; or, in other words, whenever the energy involved in the reaction to a stimulus is greater in amount than the energy which the stimulus habitually calls forth.”—P. 204.