What then are the lessons which the whole history teaches? To discover these was part of our original purpose,[1014] as well as to learn the facts and find the [pg 348] causes; to satisfy the longings of the heart, no less than the curiosity of the understanding.
First, What has been the office of doubt in history? Has it been wholly an injury, a chronic disease? or simply a gain? or has it operated in both ways? Let us find the answer, by testing each of these theories of its office by means of the facts.
The first of the three is that which has generally been held within the Christian church. It dates from the first ages of the church, and witnesses to a valuable truth. The sacred care with which the Christians treasured the doctrine, and spurned the attempts of heretics to explain it away, proves the strength of the conviction that they possessed a definite treasure of divine truth, introduced at a definite period. Their very want of toleration,[1015] the tenacity of their attachment to the faith, is a proof of their undoubting conviction concerning the historic verity of the facts connected with redemption, and the definite character of the dogmas which interpreted the facts. In later ages however, the same idea of sacredness has been extended by the Romish church to the mass of error which Christianity has taken up into itself in the progress of ages; and in Protestant countries has led to the attempt to restrain the thoughts of men even on the secular subjects most remote from religion, where the ancient sacred literature seemed to suggest any indirect information. The doubt on the part of religious men, of any progress being made by free thought, has often expressed itself too in the affirmation, that the history of unbelief shows an exact recurrence of the same doubts, without progress from age to age, and an intimation that new suggestions of doubt are only old foes under new faces.
While Christians have thus generally regarded free inquiry in religion as wholly a loss; freethinkers have taken the very opposite view, and regarded it as an [pg 349] unmixed gain. The distinguished writer[1016] of our own time on the history of civilisation, whose premature death will prevent the fulfilment of his large design, has illustrated, with the clearness and grasp over facts which constitute some of his excellences, the office of scepticism, in securing for the human mind the political liberty and toleration which he prized so dearly. His central thought was, that civilisation depended upon the progress of intellect,[1017] the emancipation of the human mind from all authority save that of inductive science: he pointed out with triumphant enthusiasm, the services which he conceived that unbelief had performed, in rescuing Europe from degrading beliefs like witchcraft, and from the introduction of supernatural causes for natural events, and in securing in France, in the eighteenth century, the political rights of the lower orders against the claims of the church. Accordingly in his opinion scepticism was an almost unmixed boon.
Those who recall the outline of the history will probably think that each of these views, taken alone, is one-sided, and contains a partial truth. The review of facts shows that free thought has had an office in the world; and, like most human agencies permitted under the administration of a benevolent Providence, its influence has neither been unmixed evil nor unmixed good. It has been an evil, so far as in the conflict of opinions it has invaded the body of essential truth which forms the treasure given to the world, in the miraculous revelation of our Lord Jesus Christ; but it has been a good, so far as it has contributed, either directly to further human progress intellectually and socially, or indirectly to bring out into higher relief these very truths by the progress of discussion.
When, for example, Christian doctrine has been overlaid from age to age by concretions which had gathered round it, as was the case previously to the [pg 350] Reformation,[1018] it has been free thought which has attacked the system, and, piercing the error, has removed those elements which had been superadded. Or, when the church has attempted to fetter human thought in other departments than its own proper domain of religion, as when the ecclesiastical authorities disgraced themselves by vetoing the discoveries of Galileo,[1019] it has been to free thought that we owe the emancipation of the human mind. Or, when the church linked itself in alliance with a decaying political system, as in the last century in France, it was free thought that recalled to it the lesson to render to Cæsar the things that were Cæsar's, and to God the things that were God's. It is instances like these, where free thought has been the means of making undoubted contributions to human improvement, or of asserting toleration, which have led writers to describe it as almost innocuous, and hastily to regard the ratio of the emancipation of the human mind from the teaching of the priesthood to be the sole measure of human improvement.
In many instances also, free thought has indirectly contributed to intellectual good, in points where it has ran a greater risk, than in those just cited, of trespassing upon the sacred truths of religion; instances, in fact, where the benefit resulting has been owing to the overruling Providence which brings good out of evil, rather than to any direct intention on the part of those who have exercised it. Examples are to be found in those epochs, when some sudden outburst of knowledge compelled a reconsideration of old truths by the light of new discoveries. The awakening of the mind in the middle age, the Renaissance, the advance of modern science, the birth of literary criticism, are instances of such moments, wherein free inquiry has been a necessity forced on the mind by outward circumstances, not self-prompted. This attitude of inquiry, this exercise [pg 351] of a provisional doubt, was not, like that described, called forth merely by the circumstance that religion had received additions from error, but must have arisen even if the faith once delivered had been preserved uncorrupted. For religion being a fixed truth, while truth in other departments is progressive, it would have been impossible to avoid the necessity of comparison of it with them from time to time, in those spheres where it intersected the field occupied by them.
Such examples, indeed, are not restricted to Christian history, but are general facts of the history of the human mind. The fifth century B.C. was such an epoch in Greece;[1020] when various causes, social and intellectual, created a sudden awakening of the human mind to reconsider its old beliefs, and find a home for the new views of nature and of the world which were opening. The free thought of the Sophists was the scepticism of doubt, of distrust; the proposal to surrender, to destroy the old: the free thought of Socrates was the scepticism of inquiry, the attempt to reconsider first principles, to rebuild truth anew. In all such moments, investigation is indirectly the means of stimulating knowledge. The history of the progress of it, in reference to the difficulties which have beset the Christian church, shows us that the epochs of doubt have not generally been produced by unbelief taking the initiative in attacking old truths without some fresh stimulus, and repeating old objections so as to exhibit perpetually recurring cycles of unbelief. We have rather seen that doubt is reawakened by the introduction of new forms of knowledge; and though old doubts recur, yet that they come arrayed in a new garb, suggested by different motives, deduced from fresh premises, and accompanied by doubts of a new kind before unknown. In a practical point of view, frequently they may be thought not to differ widely in appearance from old ones, and to present similar effects as well as forms; but in a scientific one, they ought not to be confounded, inasmuch as they [pg 352] do not present identity of cause. There has been a slow but real progress in knowledge, and a slow but real change in the modes of applying it to Christian religion. The effect of the defence offered for Christianity is equally powerful in leaving its impress on subsequent doubt, as the progress of knowledge is in suggesting novelty of form. The sphere is narrowed, or the direction changed. If thought seems to have come round in its revolution to the same spot in its orbit, it will be found to be moving not on a circle, but on a spiral; slowly but surely approaching a little nearer to the great central truth, toward which it is unconsciously attracted.
The value of the free inquiry in this latter class of cases is not in the process, but in the results; in producing the branch of theology which sets forth the evidences of revealed truth. We have previously had occasion to imply that the Christian evidences are too often regarded as mere weapons of defence; like the battle-fields of history, monuments of the struggle of evil. Being a form of truth which would never have been called forth if the church had not been attacked, the apologetic literature is usually regarded, either as obsolete because controversial, or as useless for believers. Yet truths brought to light by it, though dearly purchased, are a real contribution to Christian knowledge. As miracles are a part of Christianity as well as an evidence, so apologetic literature, while useful in argument, serves the purpose of instruction as well as of defence.[1021] The controversy with heresy or unbelief has caused truths to be perceived explicitly, which otherwise would have been only implicit; and has illustrated features of the Christian doctrine which might otherwise have remained hidden. Though these good results have not been designed by unbelievers, and cannot therefore warrant the claim asserted for scepticism, that it is always innocuous, nor be set down to the credit of free thought as a spirit; yet they evidence the value [pg 353] of it as a method; the free thought, that is, which is inquiry and consideration, not that which is disbelief.