"Monticello, Virginia, May 14, 1806.
"Sir:
"I have received the copy of the evidence at large respecting the discovery of the vaccine inoculation, which you have been pleased to send me, and for which I return you my thanks. Having been among the early converts in this part of the globe to its efficacy, I took an early part in recommending it to my countrymen. I avail myself of this occasion to render you my portion of the tribute of gratitude due to you from the whole human family. Medicine has never before produced any single improvement of such utility. Harvey's discovery of the circulation of the blood was a beautiful addition to our knowledge of the human economy; but on a review of the practice of medicine before and since that epoch, I do not see any great amelioration which has been derived from that discovery. You have erased from the calender of human afflictions one of its greatest. Yours is the comfortable reflection that mankind can never forget that you have lived; future nations will know by history only that the [{105}] loathsome small-pox has existed, and by you has been extirpated. Accept the most fervent wishes for your health and happiness, and assurances of the greatest respect and consideration.
"Th. Jefferson."
Almost more interesting than the story of Jenner, the experimental scientist, the true harbinger of modern experimental medicine, the founder of experimental pathology, and the discoverer of the pregnant idea which was to mean so much for nineteenth century medicine in the hands of Pasteur and his successors, is the story of Jenner the man, the husband, the friend, and the physician of the poor. In spite of his intense preoccupation in his experimental work and the amount of time it must have required to make his observations, he found opportunities to care for the poor and to interest himself in all their concerns as well as their health. He made many firm friends among people of his own social status and generally was considered a most amiable, as well as a liberal, and humanitarian man. He was deeply religious, and, as we shall allow his earliest biographer Dr. Baron to tell, was not ashamed to exhibit his religious feelings by word and deed when the proper occasion presented itself. This part of his life deserves to be studied as carefully and remembered as faithfully as that in which he made his discoveries, since it is the complement that shows the character of the man in its entirety.
Jenner's personal character may be very well understood from a paragraph of his biographer, who had been his bosom friend for many years. He says:
"But Dr. Jenner was not only humble in all that concerned this, the greatest incident of his life (the successful discovery of vaccination); he continued so after success had crowned [{106}] his labors, and after applause greater than most men can bear had been bestowed upon him. This most estimable quality was visible at all times; but it was particularly conspicuous when he was living in familiar intercourse with the inhabitants of his native village. If the reader could in imagination accompany me with him to the dwellings of the poor, and see him kindly and heartily inquiring into their wants, and entering into all the little details of their domestic economy; or if he could have witnessed him listening with perfect patience and good humor to the history of their maladies, he would have seen an engaging instance of untiring benevolence. He never was unwilling to receive any one, however unseasonable the time may have been. Such were his habits, even to the latest period of his life. I scarcely know any part of his character that was more worthy of imitation and unqualified respect than that to which I have alluded. I have never seen any person in any station of life in whom it was equally manifest; and when it is remembered that he was well 'stricken in years;' that he had been a most indefatigable and successful laborer in the cause of humanity; and that he might have sought for a season of repose, and the uncontrolled disposal of his own time, the sacrifices which he made are the more to be valued. In the active and unostentatious exercise of kindness and charity he spent his days; and he seemed ever to feel that he was one of those 'qui se natos ad homines juvandos, tutandos, conservandos arbitrantur,' who consider themselves born to help, protect, and cherish their fellow men.
"His kindness and condescension to the poor was equalled by his most considerate respect and regard to the feelings and character of the humblest of his professional brethren. I have often been struck with the total absence of everything that could bear the semblance of loftiness of demeanor. [{107}] Few men were more entitled to deliver their sentiments in a confident or authoritative tone; but his whole deportment was opposed to everything of that description, and he did not hesitate to seek knowledge from persons in all respects his inferiors. All his younger brethren who have ever had the happiness to meet him in practice, must have been deeply impressed with this part of his character."
Many a member of the medical profession who is not a genius will find an excuse for allowing disorder about his rooms from the example which is said to have been set by Jenner. He was interested in nearly every branch of science and specimens from many departments were constantly around him. He himself, it is said, had the key to the apparent confusion. Most of the others who allow themselves to drift into careless habits in the same direction insist that they too have the key. Some of their friends, however, are inclined to doubt it. It is curiously interesting under these circumstances to have Jenner's biographer tell of the confused state of affairs that existed in his room and yet his defence of it. Perhaps in this matter it is well to remember what Augustin Birrell says at the end of his essay on Carlisle:
"Don't let us quarrel with genius; we have none of it ourselves and the worst of it is we cannot get along without it."
"The objects of his studies generally lay scattered around him; and, as he used often to say himself, seemingly in chaotic confusion. Fossils, and other specimens of natural history, anatomical preparations, books, papers, letters--all presented themselves in strange disorder; but every article bore the impress of the genius that presided there. The fossils were marked by small pieces of paper pasted on them, having their names and the places where they were found inscribed in his own plain and distinct handwriting. [{108}] His materials for thought and conversation were thus constantly before him; and a visitor, on entering his apartment, would find in abundance traces of all his private occupations. He seemed to have no secrets of any kind; and, notwithstanding a long experience with the world, he acted to the last as if all mankind were as trustworthy and free from selfishness as himself. He had a working head, being never idle, and accumulated a great store of original observations. These treasures he imparted most generously and liberally. Indeed his chief pleasure seemed to be in pouring out the ample riches of his mind to everyone who enjoyed his acquaintance. He had often reason to lament this undoubted confidence; but such ungrateful returns neither chilled his ardor nor ruffled his temper."
It is interesting to note what was Jenner's opinion with regard to two subjects that are very much discussed at the present time. These are the questions of religious training in education, and the advisability of making nature study a part of the course for children. Jenner considered that no education could possibly be complete which did not include both of these subjects. Religious training he deemed absolutely indispensable. Nature study he advised for somewhat different reasons from those for which it is now urged. He thought there was a depth of interest in the study of the objects of nature that could scarcely fail to lessen the burden of education for the child, but the main reason for its study to his mind was that children intent on the wonders of nature could scarcely help but realize the power of the Creator and, learning to admire Him more and more, be thus drawn to respect His laws, to acknowledge His supremacy and to devote themselves to bringing about the fulfilment of His will in this world to the fullest extent in their power.