Howard Fischer Uppsala, Sweden “The whole of medicine is observation.” – William Osler, M.D.   Paw prints. Photo by Peter Castleton on Flickr. CC BY 2.0.  M. de Voltaire, the pen name of François-Marie Arouet (1694–1778), was an Enlightenment historian, philosopher, and writer. He opposed France’s absolute monarchy and the power of the church. He…