This is all very fine, but it won't...

This is all very fine, but it won't do-Anatomy-botany-Nonsense! Sir, I know an old woman in Covent Garden, who understands botany better, and as for anatomy, my butcher can dissect a joint full as well; no, young man, all that is stuff; you must go to the bedside, it is there alone you can learn disease! Comment to Hans Sloane on Robert Boyle's letter of introduction describing Sloane as a 'ripe scholar, a good botanist, a skilful anatomist'.