What prolific sources of disease are not those mineral and vegetable poisons that have been introduced for its extirpation! How many thousands have become murderers and robbers, bigots and domestic tyrants, dissolute and abandoned adventurers, from the use of fermented liquors; who, had they slaked their thirst only with pure water, would have lived but to diffuse the happiness of their own unperverted feelings. How many groundless opinions and absurd institutions have not received a general sanction from the sottishness and intemperance of individuals! Who will assert that, had the populace of Paris satisfied their hunger at the ever-furnished table of vegetable nature, they would have lent their brutal suffrage to the proscription-list of Robespierre? Could a set of men, whose passions were not perverted by unnatural stimuli, look with coolness on an auto da fé? Is it to be believed that a being of gentle feelings, rising from his meal of roots, would take delight in sports of blood? Was Nero a man of temperate life? could you read calm health in his cheek, flushed with ungovernable propensities of hatred for the human race? Did Muley Ismael’s pulse beat evenly, was his skin transparent, did his eyes beam with healthfulness, and its invariable concomitants, cheerfulness and benignity? Though history has decided none of these questions, a child could not hesitate to answer in the negative. Surely the bile-suffused cheek of Buonaparte, his wrinkled brow, and yellow eye, the ceaseless inquietude of his nervous system, speak no less plainly the character of his unresting ambition than his murders and his victories. It is impossible, had Buonaparte descended from a race of vegetable feeders, that he could have had either the inclination or the power to ascend the throne of the Bourbons. The desire of tyranny could scarcely be excited in the individual, the power to tyrannize would certainly not be delegated by a society neither frenzied by inebriation nor rendered impotent and irrational by disease. Pregnant indeed with inexhaustible calamity is the renunciation of instinct, as it concerns our physical nature; arithmetic cannot enumerate, nor reason perhaps suspect, the multitudinous sources of disease in civilized life. Even common water, that apparently innoxious pabulum, when corrupted by the filth of populous cities, is a deadly and insidious destroyer.* Who can wonder that all the inducements held out by God Himself in the Bible to virtue should have been vainer than a nurse’s tale; and that those dogmas, by which he has there excited and justified the most ferocious propensities, should have alone been deemed essential; whilst Christians are in the daily practice of all those habits, which have infected with disease and crime, not only the reprobate sons, but these favoured children of the common Father’s love? Omnipotence itself could not save them from the consequences of this original and universal sin. […]

The quantity of nutritious vegetable matter, consumed in fattening the carcase of an ox, would afford ten times the sustenance, undepraving indeed, and incapable of generating disease, if gathered immediately from the bosom of the earth. The most fertile districts of the habitable globe are now actually cultivated by men for animals, at a delay and waste of aliment absolutely incapable of calculation. It is only the wealthy that can, to any great degree, even now, indulge the unnatural craving for dead flesh, and they pay for the greater license of the privilege by subjection to supernumerary diseases. Again, the spirit of the nation that should take the lead in this great reform, would insensibly become agricultural; commerce, with all its vice, selfishness and corruption, would gradually decline; more natural habits would produce gentler manners, and the excessive complication of political relations would be so far simplified, that every individual might feel and understand why he loved his country, and took a personal interest in its welfare. How would England, for example, depend on the caprices of foreign rulers, if she contained within herself all the necessaries, and despised whatever they possessed of the luxuries of life? How could they starve her into compliance with their views? Of what consequence would it be that they refused to take her woollen manufactures, when large and fertile tracts of the island ceased to be allotted to the waste of pasturage? On a natural system of diet, we should require no spices from India; no wines from Portugal, Spain, France, or Madeira; none of those multitudinous articles of luxury, for which every corner of the globe is rifled, and which are the causes of so much individual rivalship, such calamitous and sanguinary national disputes. In the history of modern times, the avarice of commercial monopoly, no less than the ambition of weak and wicked chiefs, seems to have fomented the universal discord, to have added stubbornness to the mistakes of cabinets, and indocility to the infatuation of the people. Let it ever be remembered, that it is the direct influence of commerce to make the interval between the richest and the poorest man wider and more unconquerable. Let it be remembered, that it is a foe to every thing of real worth and excellence in the human character. The odious and disgusting aristocracy of wealth is built upon the ruins of all that is good in chivalry or republicanism; and luxury is the forerunner of a barbarism scarce capable of cure. Is it impossible to realize a state of society, where all the energies of man shall be directed to the production of his solid happiness? Certainly, if this advantage (the object of all political speculation) be in any degree attainable, it is attainable only by a community, which holds out no factitious incentives to the avarice and ambition of the few, and which is internally organized for the liberty, security and comfort of the many. None must be entrusted with power (and money is the completest species of power) who do not stand pledged to use it exclusively for the general benefit. But the use of animal flesh and fermented liquors, directly militates with this equality of the rights of man. The peasant cannot gratify these fashionable cravings without leaving his family to starve. Without disease and war, those sweeping curtailers of population, pasturage would include a waste too great to be afforded. The labour requisite to support a family is far lighter* than is usually supposed. The peasantry work, not only for themselves, but for the aristocracy, the army, and the manufacturers. […]

Let not too much however be expected from this system. The healthiest among us is not exempt from hereditary disease. The most symmetrical, athletic, and long-lived, is a being inexpressibly inferior to what he would have been, had not the unnatural habits of his ancestors accumulated for him a certain portion of malady and deformity. In the most perfect specimen of civilized man, something is still found wanting by the physiological critic. Can a return to nature, then, instantaneously eradicate predispositions that have been slowly taking root in the silence of innumerable ages?—Indubitably not. All that I contend for is, that from the moment of the relinquishing all unnatural habits, no new disease is generated; and that the predisposition to hereditary maladies gradually perishes, for want of its accustomed supply. In cases of consumption, cancer, gout, asthma, and scrofula, such is the invariable tendency of a diet of vegetables and pure water.