David Hartley, Observations on Man (6th edition…
“ And thus we may perceive, that all the pleasures and pains of sensation, imagination, ambition, self-interest, sympathy, and theopathy, as far as they are consistent with one another, with the frame of our natures, and with the course of the world, beget in us a moral sense, and lead us to the love and approbation of virtue, and to the fear, hatred, and abhorrence of vice. ”
