Moral and literary dissertations; [electronic resource] : chiefly intended as the sequel to A father's instructions. / By Thomas Percival, M.D. F.R.S. and A.S. Lond. F.R.S. and R.M.S. Edinb. Member of the Royal Society of Medicine at Paris; of the Royal Society of Agriculture at Lyons; and of the American Philosophical Society at Philadelphia, &c. &c