overtime, as they say in Lancashire, and to enable herself to bear the extra pressure she did part of the work at night in order to keep several hours of daylight clear for her walks in the country, where she lived. Many writers, in the same situation, would have temporarily abandoned exercise, but George Sand clung to it all the more at a time when it was especially necessary that she should be well. In the same way Sir Walter Scott counterbalanced the effects of sedentary occupation by his hearty enjoyment of field-sports. It has been supposed that his outdoor exercise, which to weaker persons appears excessive, may have helped to bring on the stroke of paralysis which finally disabled him; but the fact is, that when the stroke arrived Sir Walter had altered his habits of life in obedience to what he believed to be his duty, and had abandoned, or nearly so, the active amusements of his happier years. I believe rather that whilst he took so much exercise his robust constitution not only enabled him to endure it without injury, but required it to keep the nervous system healthy, in spite of his hard work in literary composition. Physical exercise, when the constitution is strong enough to endure it, is by far the best tranquillizer of the nervous system which has yet been discovered, and Sir Walter’s life at Abbotsford was, in this respect at least, grounded on the true philosophy of conduct. The French romancer, Eugene Sue, wrote till ten o’clock every morning, and passed the rest of the day, when at his country house, either in horse-exercise, or field-sports, or gardening, for all of which he had a liking which amounted to passion. Shelley’s delight was boating, which at once exercised his muscles and relieved his mind from the weariness of incessant invention or speculation. It will generally be found, that whenever a man of much intellectual distinction has maintained his powers in full activity, it has been by avoiding the bad effects of an entirely sedentary life.

I well believe that a person naturally robust, with a clear and powerful brain, could bear twelve or fourteen hours’ work every day for years together so far as the work itself is concerned, if only so large an expenditure of time left a sufficient margin for amusement, and exercise, and sleep. But the privation of exercise, by weakening the digestive and assimilative powers, reduces the flow of healthy and rich blood to the brain—the brain requires an enormous quantity of blood, especially when the cerebral matter is rapidly destroyed by intellectual labor—and usually brings on nervousness, the peculiar affliction of the over-driven mental laborer. This nervousness is Nature’s kindly warning, preserving us, if we attend to it in time, from much more serious consequences. The best preventive of it, and often the only cure, is plenty of moderate exercise. The customs of the upper classes in England happily provide this in the best shape, that of amusement enjoyed in society, but our middle classes in large towns do not get nearly enough of it, and the most studious are always strongly tempted to neglect it altogether.

Men of great imaginative power are commonly addicted to a habit which is peculiarly dangerous. They work as race-horses work, with the utmost intensity of effort during short spaces of time, taxing all their powers whilst the brilliant effort lasts. When Beckford wrote the wonderful tale “Vathek” in his twentieth year, he did it at a single sitting, which lasted for three days and two nights, and it cost him a serious illness. Several of the best poems by Byron were written, if not quite with equal rapidity, still on the same principle of composition at white heat. In cases of this kind, Nature provides her own remedy in the indolence of the imaginative temperament, which leaves large spaces of time for the action of the recuperative processes. The same law governs the physical energies of the carnivora, which maintain, or recover, their capacity for extraordinary effort by intervals of absolute repose. In its long spaces of mental rest the imaginative temperament recruits itself by amusement, which in England usually includes physical exercise of some kind.

This fortunate indolence of men of genius would in most instances ensure their safety if they were not impelled by necessity to labor beyond the suggestions of inclination. The exhausted brain never of itself seeks the additional exhaustion of hard work. You know very well when you are tired, and at such times the natural man in you asks plainly enough for rest and recreation. The art is so to arrange our lives that the natural man may sometimes have his way, and forget, if only for a time, the labors which lead to weariness—not to that pleasant weariness of the body which promises soundest sleep, but the distressing fatigue of the exhausted spirit which is tortured by the importunity of ideas which it is unable to express, and apprehensions that it cannot dismiss, which fights through the sleepless night the phantoms of unconquerable horror.

LETTER III.

TO A STUDENT IN UNCERTAIN HEALTH.

Habits of Kant, the philosopher—Objection to an over-minute regularity of habit—Value of independence of character—Case of an English author—Case of an English resident in Paris—Scott an abundant eater and drinker—Goethe also—An eminent French publisher—Turgot—Importance of good cookery—Wine drinking—Ale—The aid of stimulants treacherous—The various effects of tobacco—Tea and coffee—Case of an English clergyman—Balzac—The Arabia custom of coffee-drinking—Wisdom of occasionally using stimulants.

Immanuel Kant, who was a master in the art of taking care of himself, had by practice acquired a dexterous mode of folding himself up in the bed-clothes, by passing them over and under his shoulders, so that, when the operation was complete, he was shut up like the silkworm in his cocoon. “When I am thus snugly folded up in my bed,” he would say to his friends, “I say to myself, can any man be in better health than I am?”

There is nothing in the lives of philosophers more satisfactory than this little passage. If Kant had said to himself, “Can anybody be wiser, more learned, more justly deserving of immortal fame than I am?” we should have felt, that however agreeable this opinion might have been to the philosopher who held it, his private satisfaction stood in need of confirmation from without; and even if he had really been all this, we might have reflected that wisdom and learning still leave their possessor exposed to the acutest kinds of suffering. But when a philosopher rolls himself up at night, and congratulates himself on the possession of perfect health, we only think what a happy man he was to possess that