AUENBRUGGER, THE INVENTOR OF PHYSICAL DIAGNOSIS
While medicine is your vocation, or calling, see to it that you have also an avocation--some intellectual pastime which may serve to keep you in touch with the world of art, of science, or of letters. Begin at once the cultivation of some interest other than the purely professional. The difficulty is in a selection and the choice will be different according to your tastes and training.
--Osler, Aequanimitas and other Addresses.