Müller's father was a shoemaker and lived in a small house in the street of the Jesuits, so called because the fathers had had a school in it for many years. Johann was [{223}] not destined to receive his education from the Jesuits, however, for the order had been suppressed nearly thirty years before his birth, and did not re-establish itself in the Rhineland for many years afterward. The circumstances of the Müller family were not such as to encourage hopes of a broad education, though his father seems to have taken every possible means to secure as much school training as could be obtained for his son. The early death of his father promised to deprive Müller of whatever advantages might have accrued from family sacrifices, but his mother was one of these wonderful women who somehow succeed in raising their families well and affording their children an education in spite of untoward circumstances.
Johann was the eldest of five children, with two sisters. He was very proud himself of the fact, that while he took from his father a large, strong, healthy frame and a dignified carriage, he had his mother's skill for putting things in order, her constancy of enterprise and her tireless faculty for hard work. After his father's death, his mother's energy and good sense enabled her to carry on the business established by the elder Müller by means of assistants, and as Coblentz was the centre of a district that during the Napoleonic wars was constantly overrun with soldiery, the shoemaking trade was profitable.
Johann seems to have learned the trade, but his mother succeeded in enabling him to begin his education seriously at the age of eleven or twelve. About this time, Joseph Görres, who was afterward the great leader of Catholic thought in Germany, and after whom is named the famous Görres Gesellschaft which stands for so much in German Catholic life and progress, was a professor in the Sekunden Schule, or secondary school, in Coblentz, and had recently published treatises on natural philosophy with special [{224}] reference to physiology. Müller entered this school in 1810 and Görres did not resign his professorship until 1814, when owing to the publication of a political work he was obliged to flee from the country. It is not known how much influence Görres exercised over young Müller, but some at least of his precious love for the natural sciences, which even in his student days led to the making of natural collections of various kinds, seems to have been imbibed under the influence of the philosopher physiologist. The touching of the orbits of the two men, who were destined, more than any of their fellow-citizens of Coblentz, to influence Germany's future, must always remain an interesting consideration in the lives of both.
Johann's parents were, as might have been expected, down in the old Catholic Rhineland in the capital of the spiritual principality of Treves, faithful members of the Roman Catholic Church. Very early in life, Johann conceived the wish to become a priest. His mother, rejoiced at her son's idea, was ready to make every possible sacrifice to secure his education. It was with the intention of education for the priesthood, then, that Johann entered the Sekunden Schule, an old college of the Jesuits, in which Jesuit tradition and methods of education still survived, and in which some of the old Jesuit pupils seem still to have held positions even during Müller's time as a student (1810 to 1817).
It would appear probable that because of the traditions of Jesuit teachings that held over at the school in Coblentz, and perhaps, too, because of the presence of some of the old masters and teachers trained by them, Müller knew the ancient languages so well. He made his own translations of Plato and Aristotle, and consulted the latter especially always in the original and had a lifelong reverence for the great Greek philosophic naturalist's work, Latin he used [{225}] so well as to speak it readily, and practice in the disputations of the University at Bonn made the language still more familiar to him. It was said that he wrote Latin better than German. After the fall of Napoleon the Prussian government took up the reorganization of the schools in this part of the Rhineland, and Müller became more interested in scientific studies. At this time he became devoted to mathematics, which he studied under the old pupil of Pestalozzi, Professor Leutzinger, to whom Müller, in the sketch of his life prefixed to his thesis at the university, expressed the feeling that he owed a special debt of gratitude.
During his school days Müller became a collector, as we have said, of natural objects. He was especially interested in butterflies for a time, and collected all the species in the country around. He had a curious dislike for spiders which remained with him all his life. He was able to overcome this, however, and made important studies of that insect's eyes, and of its changing expressions under the influence of fear or when about to fall upon its prey.
His feeling with regard to the insect is an index of a certain feminine quality of mind that had a characteristic expression in later life in his dislike for vivisection. He could not bring himself to the conclusion that animals must be sacrificed in the midst of horrible pain unless there was some very definite scientific point to be determined, and unless every precaution was taken to avoid inflicting needless suffering. Even then he preferred that others should do this work and more than once took occasion to point out the fallacy of physiological observations founded on animal experimentation under such anomalous circumstances, and insisted that very frequently the results gave conclusions only by analogy and not by any strict logic of animal similarity or absolute physiological nexus.
In a sketch of Müller's life, by Professor Brücke, of Vienna, himself one of the most distinguished physiologists of the nineteenth century, to whom the University of Vienna has paid the tribute of a marble bust and tablet in its courtyard, the great Austrian physiologist sums up very well the reasons for Müller's fame. Professor Brücke's tribute may be found in the Medical Times and Gazette, of London, July 17, 1858. "If we inquire," he says, "what were the circumstances to which Müller, independently of his high intellectual endowment, his gigantic power for work, the energy and massiveness of his character, and his active and vigorous bodily constitution, owed the commanding position he incontestably held among men of science in our day, we must admit that before all things this was due to the breadth and depth of the foundations upon which his intellectual cultivation had been built." Professor Brücke then dilates on the variety of scientific interests which occupied Müller's earlier years and the thoroughness with which he accomplished everything that he set himself to.
A very curious reflection on our modern methods of education, and especially the tendency to specialization and the formation of specialists from their very early years, is to be found in Brücke's account of the extent and variety of Müller's studies in all lines. Far from considering that these diverse intellectual interests hindered the development of his genius, he seems to consider that they rather aided in the evolution of that largeness of mind characteristic of the great genius. He says: