Introd., chap. X; Bowring, vol. I, p. 46 sqq

147. O/i Man, Part I, chap. m, sect. I, Prop. LXXX, Cor. 5. 'When words hâve acquired any considérable power of excitingpleasant or painful vibrations in the nervous system, by being often associated with such things as do tins, they may transfer a part of thèse pleasures and pains upon indiffèrent things, bj being at other times often associated with such. This is one of the principal sources of the several factitious pleasures and pains of human life. Thus, to give an instance from childhood, the words sweet, good, pretty, fine, etc., on the one hand, and the words lad, ugly, frightful, etc., on the other, being applied by the nurse and attendants in the young child'shearing almostpromiscuously, and withoutthose restrictions that are observed in correct spealdng, the one to ail the pleasures, the other to ail the pains of the several sensés, must by association raise up gênerai pleasant and painful vibrations, in which no one part can bedistinguished above the rest; and, when applied by farther associations to objects of a neutral kind, they must transfer a gênerai pleasure or pain upon them.