« Sure and certain methods of attaining a long and healthy life »…My treatise on a sober life has begun to answer my desire, in being of service to many persons born with a weak constitution, who every time they committed the least excess, found themselves greatly indisposed, a thing which it must be allowed does not happen to robust people: several of these persons of weak constitutions, on seeing the foregoing treatise, have betaken themselves to a regular course of life, convinced by experience of its utility.