After two years spent in medicine at Würzburg, another great Catholic university of Southern Germany, we find Schwann at the University of Berlin, once more working with Johann Müller, who had been invited from Bonn to fill the distinguished Rudolphi's place in the chair of anatomy at the rising Prussian university. Müller was one of those wonderful men--they turn up, unfortunately, all too rarely--who, though not great discoverers themselves, have the invaluable faculty of inspiring students with an enthusiasm for original observation which leads to the most brilliantly successful researches. A great teacher, in the proper sense of the word, he was not. In his public lectures and his ordinary lessons he was often arid and uninteresting, insisting too much on unrelieved details, "the dry bones of science." He seems to have failed almost completely in conveying the usual scientific information of his course with the air of novelty that attracts the average student. The true teaching faculties are not given to many. Müller had a precious quality all his own that has proved much more valuable for science than the most enlightened pedagogy. To the chosen few among his students who were drawn into close intimacy with him and permitted to share his personal scientific labors, Müller proved a source of most precious incentive--a suggestive master, the inspiration of {258} whose investigating spirit was to be with them throughout life. To no one, except perhaps to Socrates of yore, has it been given to have sit at his feet as pupils so many men who were to leave their marks upon the developing thought of a great era in human progress. Beside Schwann, there studied with Müller, during these years at Berlin, Henle the anatomist, Brücke the physiologist, Virchow the pathologist, Helmholtz the physicist, Du Bois-Reymond the physiologist, Claparède, Reichert, Lachmann, Troschel, Lieberkühn and Remak. All these names are writ large in the scientific history of the century. It is a remarkable group of men, and of them Schwann, with the possible exception of Helmholtz, will be remembered the best by posterity; certainly none of them would not have cheerfully resigned his hopes of scientific renown for any work of his own to have made the discovery which, as an enthusiastic biographer said, set the crown of immortality on a young, unwrinkled forehead.