When intelligent and sensible people despise knowledge in their old age, it is only because they have asked too much of it and of themselves.
Johann Wolfgang von GoetheAnd those whom once my song had cheered and gladdened, If still they live, rove through the world now saddened.
Johann Wolfgang von GoetheIn all our academies we attempt far too much. ... In earlier times lectures were delivered upon chemistry and botany as branches of medicine, and the medical student learned enough of them. Now, however, chemistry and botany are become sciences of themselves, incapable of comprehension by a hasty survey, and each demanding the study of a whole life, yet we expect the medical student to understand them. He who is prudent, accordingly declines all distracting claims upon his time, and limits himself to a single branch and becomes expert in one thing.
Johann Wolfgang von Goethe