If these hard-headed scientists, whose training has been obtained in what physical scientists themselves, at least, are fain to call the rigid school of the logic of facts, and under the severe mental discipline of the inductive method, accept on the evidence afforded them, the manifestations of the spiritual world and its influences in this as true, surely we will not condemn these men of the Middle Ages, who approached the subject in such a different temper, if they came to the same conclusion. We recognize that the modern scientist, with his trained powers of observation and his elaborate facilities for eliminating the adventitious in his experiments, is in a position to judge impartially with regard to such subjects. More than this, his life has usually been spent in making such syntheses of evidence for and against the significance of facts, as should enable him to be a proper judge. If, then, whenever he seriously devotes himself to such an investigation, he comes almost inevitably to the conclusion that spirits do intervene in our affairs, yet we refuse to believe with him, it is hard to know on what principle we shall accept his scientific conclusions. If we cannot bring ourselves to think his conclusions are of equal value in both cases, we place ourselves in a strange dilemma. The medieval scholars were prone, because of the faith to which they had given their whole-hearted adhesion, to see spiritual powers at work in many things. In this they were [{389}] sometimes sadly mistaken, but not so much mistaken as certain generations of the nineteenth century, who absolutely refused to accept any possibility of spiritual interference in things mundane. Both the extremes are mistakes. It is manifestly more of a mistake, however, to deny spiritual influence entirely (I talk now from the standpoint of the scientist and not the believer), than to accept so much of spiritual interference as the medieval generations permitted themselves to be convinced of.
This whole subject is one that cannot be dismissed as the conclusion of a bit of vapid superficial argumentation. It is one of the great mysteries of life and of the significance of man in the world. The medieval peoples did much harm by accepting the position, that many persons suffering from ordinary nervous and mental diseases as we now know them were really possessed by the devil. The treatment accorded these supposedly possessed (for the moment we lay aside the question as to the possibility of the reality of diabolic possession) was not any worse than has frequently been accorded to sufferers from mental and nervous disease in presumably much more intelligent times, either because of fear of them, or neglect on account of the absence of a sufficient number of keepers, or because of curious theories of medical science. Mankind, it is hoped, is progressing, but the amount of progress from generation to generation is not enough, that any succeeding age should criticise severely the well-intentioned though mistaken efforts of their predecessors to meet, according to the best of their ability, problems that are as deep as those involved in nervous and mental diseases.
APPENDIX.
"The truth seeker has had to struggle for his physical life. Each acquisition of truth has been resisted by the full force of the inertia of satisfaction with preconceived ideas. Just as a new thought comes to us with a shock which rouses the resistance of our personal conservatism, so a new idea is met and repelled by the conservatism of society." (Jordan, The Struggle for Realities, in Footsteps of Evolution.)
I.
OPPOSITION TO SCIENTIFIC PROGRESS.
The main purpose of this book has not been accomplished unless it has been shown that the Church, the Popes, and ecclesiastics generally during the Middle Ages, and especially during the three centuries before the reformation so-called, far from opposing scientific advance or investigation, were constantly in the position of encouraging and fostering science, even if the meaning of that term be limited, as it has come to be in modern times, to the physical or natural sciences. The Popes and the great ecclesiastics were patrons of learning of every kind, and that they not only encouraged, but aided very materially the institutions of learning in which the problems of science with which we are now engaged, were discussed in very much the same way as we discuss them at the present time, is evident from the story of the foundation of the universities. It will be a source of wonder to many people how, with all this as a matter of simple educational history, the traditions with regard to the supposed opposition of the Church and the Popes to science have grown up. This is not so difficult to understand, however, as might be thought, [{391}] and a few words of explanation will serve to show that there was opposition to science, but that this was not due to religious intolerance in any proper sense of the term.
Those who give the religious element a prominent place in this, forget how much natural opposition to the introduction of new ideas there is in men's minds, quite apart from their religious convictions. Nearly two centuries ago Dean Swift said, in his own bitter frame of mind of course, but still with an approach to truth that has made the expression one of the oft-quoted passages from his works: "When a true genius appears in the world, you may know him by this sign--that all the asses are in confederacy against him."
I suppose the Dean himself would have been the first to insist that some of his colleagues in the ministry eminently deserved the opprobrious substantive epithet he employed. It would be too much to expect that there should not be as many foolish ones among the clergy of the olden times as in any other of the professions. Occasionally one of these foolish clergymen rose up in opposition to science. Whenever he did, especially if he belonged to the class mentioned by Dean Swift, then he surely made his religion the principal reason for his opposition. That gave an added prestige in his mind and in the minds of those who accepted his teachings, to whatever he had to say on the subject. This no more involved the Church itself, nor ecclesiastics generally, in the condemnation of the particular scientific doctrine, than does the frequent opposition of peculiar members of medical societies to real progress in medicine, involve the organization to which they belong in the old-fogyism which would prevent advance.
It must not be forgotten that small minds are always prone to find very respectable reasons for their opposition to something that has been hitherto unknown to them. While novelty is supposed to attract, and does when it comes in a form not too unfamiliar, and when men are not asked to give up old convictions for its sake, real newness always evokes opposition. Washington Allston once said very well with regard to this, that "An original mind is rarely understood until it has been reflected from some half-dozen congenial with it, so [{392}] averse are men to admitting the true in an unusual form; whilst any novelty, however fantastic, however false, is greedily swallowed." This principle will be of great service in making clear the real significance of many incidents in the history of science, in which not only intelligent men without special scientific training have been found in opposition to real scientific progress, but in which men having had the advantage of long experience in scientific investigation, having themselves sometimes as younger men done original work of value, have yet placed themselves squarely in opposition to scientific advance that eventually proved of the highest possible significance.