If this recantation had brought any comfort or peace into his life it might have been hard to forgive Galileo’s perjury of himself. His persecution, however, continued to the end. He was exiled from his family and friends, and, even when he had become blind and wasted by sorrow and disease, he was still closely watched lest he might utter the awful heresy that the earth moved.

A hundred years later than this, when Buffon attempted to teach the simple truths of geology, he was deposed from his high position and made to recant by the theological faculty of the Sorbonne. The man who promulgated geological principles, as firmly established to-day as that of the rotation of the earth upon its axis, was forced to write: “I declare that I had no intention to contradict the text of Scripture; that I believe most firmly all therein related about the creation, both as to order of time and matter of fact. I abandon everything in my book respecting the formation of the earth, and generally all which may be contrary to the narrative of Moses.”

Such are the more heinous examples of the persecution of the men who discovered the truths of science. To these should be added the wholesale persecution of witches and magicians, for unusual knowledge of any sort ran the chance of being regarded as contrary to biblical teaching and of being attributed to the machinations of the Prince of Darkness.

Every new step made in the direction of scientific truth has had thus to face the most determined opposition. Persecution by torture and death died out, but up to the nineteenth century, and well on through it, denunciation, excommunication, suppression, the loss of honorable positions have all been used as weapons by church or university in the attempt to stamp out whatever it considered dangerous and subverting doctrines of science.

The decisive battle was not to be inaugurated until the latter half of the nineteenth century, with the advent in the field of such names in science as Spencer, Darwin, Tyndall and Huxley, and such names in biblical criticism as Strauss and Renan.

The outposts, it is true, had been won by advancing scientific thought, for step by step the Church had compromised, and had admitted one scientific doctrine after another as not incompatible with biblical truth. But now, not only theology, the imperfect armor in which the spirit had been clothed, was attacked, but the very existence of spirit itself was to be questioned. The thinking world was to be divided into materialists and supernaturalists. Now, at last, mind and spirit, who in the ages long gone had been brothers, were to stand face to face as enemies. Was this mortal combat to end in the annihilation of either, or would this, too, end in a compromise leading to harmony?

At the dawn of this century, in 1812, came into the world its master poetic mind. I say this to-day without hesitation, for no other English poet of the century has been so thoroughly aware of the intellectual tendencies of his century, and has so emotionalized them and brought them before us under the humanly real conditions of dramatic utterance.

It is not surprising, considering this fact, that in his second poem, written in 1835, Browning ventures into the arena and at once tackles the supreme problem of the age, what is to be the relation of mind and spirit?

It is characteristic of the poetic methods, which dominated his work, that he should have presented this problem through the personality of a historical figure who played no inconsiderable part in the intellectual development of his time, though not a man to whom general historians have been in the habit of assigning much space in their pages. Browning, however, as Hall Griffin informs us, had been familiar with the name of Paracelsus from his childhood, of whom he had read anecdotes in a queer book, Wanley’s “Wonders of the Little World.” Besides, his father’s library, wherein as a boy he was wont to browse constantly, contained the Opera Omnia of Paracelsus.

With the confidence of youth and of genius the poet attempts in this poem a solution of the problem. To mind he gives the attribute of knowledge, to spirit the attribute of love.