I've often heard it said a preacher might learn with a comedian for a teacher.
Johann Wolfgang von GoetheFew are open to conviction, but the majority of men are open to persuasion
Johann Wolfgang von GoetheWhat is hardest of all? That which seems most simple: to see with your eyes what is before your eyes.
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