De Quincey has given his views pretty freely as to the regimen to be observed by reforming opium-eaters, in a paper on "The Temperance Movement" which is specially worthy of attention.
"My own experience had never travelled in that course which could much instruct me in the miseries from wine or in the resources for struggling with it. I had repeatedly been obliged, indeed, to lay it aside altogether; but in this I never found room for more than seven or ten days' struggle: excesses I had never practiced in the use of wine: simply the habit of using it, and the collateral habits formed by excessive use of opium, had produced no difficulty at all in resigning it even on an hour's notice. From opium I derive my right of offering hints at all upon the subject of abstinence in other forms. But the modes of suffering from the evil, and the separate modes of suffering from the effort of self-conquest, together with errors of judgment incident to such states of transitional torment, are all nearly allied, practically analogous as regards the remedies, even if characteristically distinguished to the inner consciousness. I make no scruple, therefore, of speaking as from a station of high experience and of most watchful attention, which never remitted even under sufferings that were at times absolutely frantic. Once for all, however, in cases deeply rooted no advances ought ever to be made but by small stages; for the effect, which is insensible at first, by the tenth, twelfth, or fifteenth day generally accumulates unendurably under any bolder deduction. Certain it is, that by an error of this nature at the outset, most natural to human impatience under exquisite suffering, too generally the triai is abruptly brought to an end through the crisis of a passionate relapse.
"Another object, and one to which the gladiator matched in single duel with intemperance must direct a religious vigilance, is the digestibility of his food. It must be digestible not only by its original qualities, but also by its culinary preparation.
"The whole process and elaborate machinery of digestion are felt to be mean and humiliating when viewed in relation to our mere animal economy. But they rise into dignity and assert their own supreme importance when they are studied from another station, viz., in relation to the intellect and temper. No man dares then to despise them; it is then seen that these functions of the human system form the essential basis upon which the strength and health of our higher nature repose; and that upon these functions, chiefly, the general happiness of life is dependent. All the rules of prudence or gifts of experience that life can accumulate, will never do as much for human comfort and welfare as would be done by a stricter attention, and a wiser science, directed to the digestive system. In this attention lies the key to any perfect restoration for the victim of intemperance. The sheet-anchor for the storm-beaten sufferer who is laboring to recover a haven of rest from the agonies of intemperance, and who has had the fortitude to abjure the poison which ruined, but which also for brief intervals offered him his only consolation, lies, beyond all doubt, in a most anxious regard to every thing connected with this supreme function of our animal economy. By how much the organs of digestion are feebler, by so much is it the more indispensable that solid and animal food should be adopted. A robust stomach may be equal to the trying task of supporting a fluid such as tea for breakfast; but for a feeble stomach, and still worse for a stomach enfeebled by bad habits, broiled beef or something equally solid and animal, but not too much subjected to the action of fire, is the only tolerable diet. This indeed is the capital rule for a sufferer from habitual intoxication, who must inevitably labor under an impaired digestion: that as little as possible he should use of any liquid diet, and as little as possible of vegetable diet. Beef and a little bread (at the least sixty hours old) compose the privileged bill of fare for his breakfast. Errors of digestion, either from impaired powers or from powers not so much enfeebled as deranged, is the one immeasurable source both of disease and of secret wretchedness to the human race. Next, after the most vigorous attention, and a scientific attention, to the digestive system, in power of operation, stands exercise. For myself, under the ravages of opium, I have found walking the most beneficial exercise; besides that, it requires no previous notice or preparation of any kind; and this is a capital advantage in a state of drooping energies, or of impatient and unresting agitation. I may mention, as possibly an accident of my individual temperament, but possibly, also, no accident at all, that the relief obtained by walking was always most sensibly brought home to my consciousness, when some part of it (at least a mile and a half) had been performed before breakfast. In this there soon ceased to be any difficulty; for, while under the full oppression of opium it was impossible for me to rise at any hour that could, by the most indulgent courtesy, be described as within the pale of morning, no sooner had there been established any considerable relief from this oppression than the tendency was in the opposite direction—the difficulty became continually greater of sleeping even to a reasonable hour. Having once accomplished the feat of walking at 9 A.M., I backed in a space of seven or eight months to eight o'clock, to seven, to six, five, four, three; until at this point a metaphysical fear fell upon me that I was actually backing into 'yesterday,' and should soon have no sleep at all. Below three, however, I did not descend; and, for a couple of years, three and a half hours' sleep was all that I could obtain in the twenty-four hours. From this no particular suffering arose, except the nervous impatience of lying in bed for one moment after awaking. Consequently the habit of walking before breakfast became at length troublesome no longer as a most odious duty, but on the contrary, as a temptation that could hardly be resisted on the wettest mornings. As to the quantity of the exercise, I found that six miles a day formed the minimum which would support permanently a particular standard of animal spirits, evidenced to myself by certain apparent symptoms. I averaged about nine and a half miles a day, but ascended on particular days to fifteen or sixteen, and more rarely to twenty-three or twenty-four; a quantity which did not produce fatigue: on the contrary it spread a sense of improvement through almost the whole week that followed; but usually, in the night immediately succeeding to such an exertion, I lost much of my sleep—a privation that under the circumstances explained, deterred me from trying the experiment too often. For one or two years I accomplished more than I have here claimed, viz., from six to seven thousand miles in the twelve months.
"A necessity more painful to me by far than that of taking continued exercise arose out of a cause which applies perhaps with the same intensity only to opium cases, but must also apply in some degree to all cases of debilitation from morbid stimulation of the nerves, whether by means of wine, or opium, or distilled liquors. In travelling on the outside of mails during my youthful days, I made the discovery that opium, after an hour or so, diffuses a warmth deeper and far more permanent than could be had from any other known source. I mention this to explain in some measure the awful passion of cold which for some years haunted the inverse process of laying aside the opium. It was a perfect frenzy of misery; cold was a sensation which then first, as a mode of torment, seemed to have been revealed. In the months of July and August, and not at all the less during the very middle watch of the day, I sat in the closest proximity to a blazing fire: cloaks, blankets, counterpanes, hearth-rugs, horse-cloths, were piled upon my shoulders, but with hardly a glimmering of relief.
"At night, and after taking coffee, I felt a little warmer, and could sometimes afford to smile at the resemblance of my own case to that of Harry Gile. Meantime, the external phenomenon by which the cold expressed itself was a sense (but with little reality) of eternal freezing perspiration. From this I was never free; and at length, from finding one general ablution sufficient for one day, I was thrown upon the irritating necessity of repeating it more frequently than would seem credible if stated. At this time I used always hot water, and a thought occurred to me very seriously that it would be best to live constantly, and perhaps to sleep, in a bath. What caused me to renounce this plan was an accident that compelled me for one day to use cold water. This, first of all, communicated any lasting warmth; so that ever afterward I used none but cold water. Now to live in a cold bath in our climate, and in my own state of preternatural sensibility to cold, was not an idea to dally with. I wish to mention, however, for the information of other sufferers in the same way, one change in the mode of applying the water which led to a considerable and a sudden improvement in the condition of my feelings. I had endeavored in vain to procure a child's battledore, as an easy means (when clothed with sponge) of reaching the interspace between the shoulders. In default of a battledore, therefore, my necessity threw my experiment upon a long hair-brush; and this, eventually, proved of much greater service than any sponge or any battledore, for the friction of the brush caused an irritation on the surface of the skin, which, more than any thing else, has gradually diminished the once continual misery of unrelenting frost, although even yet it renews itself most distressingly at uncertain intervals.
"I counsel the patient not to make the mistake of supposing that his amendment will necessarily proceed continuously or by equal increments, because this, which is a common notion, will certainly lead to dangerous disappointments. How frequently I have heard people encouraging a self-reformer by such language as this: 'When you have got over the fourth day of abstinence, which suppose to be Sunday, then Monday will find you a trifle better; Tuesday better still—though still it should be only a trifle—and so on. You may at least rely on never going back, you may assure yourself of having seen the worst, and the positive improvements, if trifles separately, must soon gather into a sensible magnitude.' This may be true in a case of short standing, but as a general rule it is perilously delusive. On the contrary, the line of progress, if exhibited in a geometrical construction, would describe an ascending path upon the whole, but with frequent retrocessions into descending curves, which, compared with the point of ascent that had been previously gained and so vexatiously interrupted, would sometimes seem deeper than the original point of starting. This mortifying tendency I can report from experience, many times repeated, with regard to opium, and so unaccountably, as regarded all the previous grounds of expectation, that I am compelled to suppose it a tendency inherent in the very nature of all self-restorations for animal systems.
"I counsel the patient frequently to call back before his thoughts—when suffering sorrowful collapses that seem unmerited by any thing done or neglected—that such, and far worse perhaps, must have been his experience, and with no reversion of hope behind, had he persisted in his intemperate indulgences; these also suffer their own collapses, and (so far as things not co-present can be compared) by many degrees more shocking to the genial instincts. I exhort him to believe that no movement on his own part, not the smallest conceivable, toward the restoration of his healthy state, can by possibility perish. Nothing in this direction is finally lost; but often it disappears and hides itself; suddenly, however, to re-appear, and in unexpected strength, and much more hopefully, because such minute elements of improvement, by re-appearing at a remoter stage, show themselves to have combined with other elements of the same kind, so that equally by their gathering tendency and their duration through intervals of apparent darkness, and below the current of what seemed absolute interruption, they argue themselves to be settled in the system. There is no good gift that does not come from God. Almost his greatest is health, with the peace which it inherits, and man must reap this on the same terms as he was told to reap God's earliest gift, the fruits of the earth, viz., 'in the sweat of his brow,' through labor, often through sorrow, through disappointment, but still through imperishable perseverance, and hoping under clouds when all hope seemed darkened.
"But it seems to me important not to omit this particular caution: The patient will be naturally anxious, as he goes on, frequently to test the amount of his advance, and its rate, if that were possible; but this he will see no mode of doing except through tentative balancings of his feelings, and generally of the moral atmosphere around him, as to pleasure and hope, against the corresponding states so far as he can recall them from his periods of intemperance. But these comparisons I warn him are fallacious when made in this way. The two states are incommensurable on any plan of direct comparison. Some common measure must be found, and out of himself; some positive fact that will not bend to his own delusive feeling at the moment; as, for instance, in what degree he finds tolerable what heretofore was not so—the effort of writing letters, or transacting business, or undertaking a journey, or overtaking the arrears of labor, that had been once thrown off to a distance. If in these things he finds himself improved, by tests that can not be disputed, he may safely disregard any sceptical whispers from a wayward sensibility which can not yet, perhaps, have recovered its normal health, however much improved. His inner feelings may not yet point steadily to the truth, though they may vibrate in that direction. Besides, it is certain that sometimes very manifest advances, such as any medical man would perceive at a glance, carry a man through stages of agitation and discomfort. A far worse condition might happen to be less agitated, and so far more bearable. Now when a man is positively suffering discomfort, when he is below the line of pleasurable feeling, he is no proper judge of his own condition, which he neither will nor can appreciate. Toothache extorts more groans than dropsy."
Little is definitely known to the public of De Quincey's opium habits subsequent to the publication in the year 1822 of the Appendix to the "Confessions." In the "Life of Professor Wilson," by his daughter, Mrs. Gordon, a letter from De Quincey, under date of February, 1824, is given, which says: "As to myself—though I have written not as one who labors under much depression of mind—the fact is, I do so. At this time calamity presses upon me with a heavy hand. I am quite free of opium, but it has left the liver, which is the Achilles heel of almost every human fabric, subject to affections which are tremendous for the weight of wretchedness attached to them. To fence with these with the one hand, and with the other to maintain the war with the wretched business of hack author, with all its horrible degradations, is more than I am able to bear. At this moment I have not a place to hide my head in. Something I meditate—I know not what—'Itaque e conspectu omnium abiit.' With a good publisher and leisure to premeditate what I write, I might yet liberate myself; after which, having paid everybody, I would slink into some dark comer, educate my children, and show my face in the world no more." To the statement of De Quincey that he was then free of opium, Mrs. Gordon adds in a note: "To the very last he asserted this, but the habit, although modified, was never abandoned." Referring to a protracted visit made by him in the year 1829-30 to Professor Wilson, Mrs. Gordon says: