“From powerful causes spring the empiric's gains, Man's love of life, his weakness, and his pains; These first induce him the vile trash to try, Then lend his name, that other men may buy.” MenTryingFirstsMayPainNamesCausesPowerfulSpringWeaknessGainsLove LifeTrashQuackery Book:The Poetical Works with His Letters and Journals and His Life by His Son. - London, John Murray 1834 Source: The Poetical Works with His Letters and Journals and His Life by His Son. - London, John Murray 1834