It is open to us to believe that Hume's friends contemplated no more than a temporary exclusion of him from their counsels until this storm should pass by; but at any rate, as they launched their frail bark in the very thick of the storm, it would have meant instant swamping at that juncture to have taken the Jonah who caused all the commotion and made him one of their crew. For the same reason, when they found that, for all their precautions, the clamour overtook them notwithstanding, they simply put back into port and never risked so unreasoning and raging an element again.
It may indeed be thought that they declined Hume's co-operation, because they expressly hoisted the flag of religion in their preface, and professed one of their objects to be to resist the current attacks of infidelity. But there would have been no inconsistency in engaging the co-operation of an unbeliever on secular subjects, so long as they retained the rudder in their own hands, and men who were already Hume's intimate personal friends were not likely to be troubled with such unnecessary scruples about their consistency. The true reason both of Hume's exclusion from their secret and of their own abandonment of their undertaking is undoubtedly the reason given by Lord Woodhouselee, that they wanted to live and work in peace. They did not like, to use a phrase of Hamilton of Bangour, to have "zeal clanking her iron bands" about their ears. Hume, on the other hand, rather took pleasure in the din he provoked, and had he been a contributor the rest would have had difficulty—and may have felt so—in restraining him from gratifying that taste when any favourable opportunities offered.
While these things were going on in Edinburgh a book had made its appearance from the London press, which is often stated to have been written for the express purpose of converting Adam Smith to a belief in the miraculous evidences of Christianity. That book is the Criterion of Miracles Examined, by Smith's Oxford friend Bishop Douglas, then a country rector in Shropshire. It is written in the form of a letter to an anonymous correspondent, who had, in spite of his "good sense, candour, and learning," and on grounds "many of them peculiar to himself and not borrowed from books," "reasoned himself into an unfavourable opinion of the evidences of Christianity"; and this anonymous correspondent is said in Chalmers's Biographical Dictionary to have been "since known to be Adam Smith." From Chalmers's Dictionary the same statement has been repeated in the same words in subsequent biographical dictionaries and elsewhere, but neither Chalmers nor his successors reveal who it was to whom this was known, or how he came to know it; and on the other hand, Macdonald, the son-in-law and biographer of Douglas, makes no mention of Smith's name in connection with this work at all, and explicitly states that the book was written for the satisfaction of more than one of the author's friends, who had been influenced by the objections of Hume and others to the reality of the Gospel miracles.[94] This leaves the point somewhat undetermined.
Smith was certainly a Theist, his writings leave no doubt of that, but he most probably discarded the Christian miracles; and if Douglas's book is addressed to his particular position, discarded them on the ground that there is no possible criterion for distinguishing true miracles from false, and enabling you to accept those of Christianity if you reject those of profane history. The Earl of Buchan, apostrophising Smith, asks, "Oh, venerable and worthy man, why was you not a Christian?" and tries to let his old professor down as gently as possible by suggesting that the reason lay in the warmth of his heart, which always made him express strongly the opinions of his friends, and carried him in this instance into sympathy with those of David Hume. That is obviously a lame conclusion, because Smith's friendship for Hume never made him a Tory, nor even on the point of religion were his opinions identical with those of Hume; but Lord Buchan's words may be quoted as an observation by an acute man of a feature in Smith's character not without biographical interest. "Had he (Smith) been a friend of the worthy ingenious Horrox," says his lordship, "he would have believed that the moon sometimes disappeared in a clear sky without the interposition of a cloud, or of another truly honest and respectable man, that a professor of mathematics at Upsala had a tail of six inches long to his rump."[95]
In 1756 the literary circle in Edinburgh was much excited by the performance of John Home's tragedy of Douglas. Smith was not present at that performance; but he is stated by Henry Mackenzie, in his Life of John Home, to have been present at some of the previous rehearsals of the play, and at any rate he was deeply interested in it; and Hume, as soon as he hears of the continued success of the play in London, hastens to communicate the welcome news to his friend in Glasgow, with whom he was in correspondence about his own historical plans. Smith seems to have been advising him, instead of following up his History of the Stewarts by the history of succeeding periods, to go back and write the history of the period before the Stewarts.
After mentioning John Home, Hume proceeds: "I can now give you the satisfaction of hearing that the play, though not near so well acted in Covent Garden as in this place, is likely to be very successful. Its great intrinsic merit breaks through all obstacles. When it shall be printed (which shall be soon) I am persuaded it will be esteemed the best, and by French critics the only tragedy of our language!...
"Did you ever hear of such madness and folly as our clergy have lately fallen into? For my part, I expect that the next Assembly will very solemnly pronounce the sentence of excommunication against me, but I do not apprehend it to be a matter of any consequence; what do you think?
"I am somewhat idle at present and somewhat indifferent as to my next undertaking. Shall I go backwards or forwards in my History? I think you used to tell me that you approved more of my going backwards. The other would be the more popular subject, but I am afraid I shall not find materials sufficient to ascertain the truth, at least without settling in London, which I own I have some reluctance to. I am settled here very much to my mind, and would not wish at my years to change the place of my abode.
"I have just now received a copy of Douglas from London. It will instantly be put in the press. I hope to be able to send you a copy in the same parcel with the dedication."[96]
Hume was now very anxious to have his friend nearer him, and thought in 1758 an opportunity could be contrived of translating Smith to a chair in the University of Edinburgh. There was at that time some probability of Professor Abercromby resigning the chair of Public Law (then styled the chair of the Law of Nature and Nations), and as Smith, though not a lawyer, was yet a distinguished professor of jurisprudence, his friends in Edinburgh immediately suggested his candidature, especially as they believed such a change would not be unacceptable to himself. The chair of the Law of Nature and Nations was one of the best endowed in the College, having a revenue of £150 a year independently of fees, but it had been founded as a job, and continued ever since to be treated as a sinecure. Not a single lecture had ever been delivered by any of its incumbents, in spite of repeated remonstrances on the part of the Faculty of Advocates, and Hume believed that if the Town Council, as administrators of the College, could be got to press for the delivery of the statutory lectures, the present professor would prefer the alternative of resignation. In that event the vacant office might easily, in Hume's opinion, be obtained by Smith, inasmuch as the patronage was in the hands of the Crown, and Crown patronage in Scotland at the time was virtually exercised through Lord Justice-Clerk Milton (a nephew of Andrew Fletcher of Saltoun, the patriot), who had been, ever since the death of Lord President Forbes, the chief confidential adviser of the Duke of Argyle, the Minister for Scotland, and was personally acquainted with Smith through his daughter Mrs. Wedderburn of Gosford, the friend of Robertson and John Home.