Unsophisticated instinct is invariably unerring; but to decide on the fitness of animal food from the perverted appetites which its constrained adoption produces; is to make the criminal a judge in his own cause: it is even worse, it is appealing to the infatuated drunkard in a question of the salubrity of brandy.

What is the cause of morbid action in the animal system? Not the air we breathe, for our fellow-denizens of nature breathe the same uninjured; not the water we drink (if remote from the pollutions of man and his inventions (The necessity of resorting to some means of purifying water, and the disease which arises from its adulteration in civilized countries, is sufficiently apparent. See Dr. Lambe’s “Reports on Cancer”. I do not assert that the use of water is in itself unnatural, but that the unperverted palate would swallow no liquid capable of occasioning disease.)), for the animals drink it too; not the earth we tread upon; not the unobscured sight of glorious nature, in the wood, the field, or the expanse of sky and ocean; nothing that we are or do in common with the undiseased inhabitants of the forest. Something, then, wherein we differ from them: our habit of altering our food by fire, so that our appetite is no longer a just criterion for the fitness of its gratification. Except in children, there remain no traces of that instinct which determines, in all other animals, what aliment is natural or otherwise; and so perfectly obliterated are they in the reasoning adults of our species, that it has become necessary to urge considerations drawn from comparative anatomy to prove that we are naturally frugivorous.

Crime is madness. Madness is disease. Whenever the cause of disease shall be discovered, the root, from which all vice and misery have so long overshadowed the globe, will lie bare to the axe. All the exertions of man, from that moment, may be considered as tending to the clear profit of his species. No sane mind in a sane body resolves upon a real crime. It is a man of violent passions, bloodshot eyes, and swollen veins, that alone can grasp the knife of murder. The system of a simple diet promises no Utopian advantages. It is no mere reform of legislation, whilst the furious passions and evil propensities of the human heart, in which it had its origin, are still unassuaged. It strikes at the root of all evil, and is an experiment which may be tried with success, not alone by nations, but by small societies, families, and even individuals. In no cases has a return to vegetable diet produced the slightest injury; in most it has been attended with changes undeniably beneficial. Should ever a physician be born with the genius of Locke, I am persuaded that he might trace all bodily and mental derangements to our unnatural habits, as clearly as that philosopher has traced all knowledge to sensation. 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 fe? 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. (Lambe’s “Reports on Cancer”.) 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 those favoured children of the common Father’s love? Omnipotence itself could not save them from the consequences of this original and universal sin.

There is no disease, bodily or mental, which adoption of vegetable diet and pure water has not infallibly mitigated, wherever the experiment has been fairly tried. Debility is gradually converted into strength; disease into healthfulness; madness, in all its hideous variety, from the ravings of the fettered maniac to the unaccountable irrationalities of ill-temper, that make a hell of domestic life, into a calm and considerate evenness of temper, that alone might offer a certain pledge of the future moral reformation of society. On a natural system of diet, old age would be our last and our only malady; the term of our existence would be protracted; we should enjoy life, and no longer preclude others from the enjoyment of it; all sensational delights would be infinitely more exquisite and perfect; the very sense of being would then be a continued pleasure, such as we now feel it in some few and favoured moments of our youth. By all that is sacred in our hopes for the human race, I conjure those who love happiness and truth to give a fair trial to the vegetable system. Reasoning is surely superfluous on a subject whose merits an experience of six months would set for ever at rest. But it is only among the enlightened and benevolent that so great a sacrifice of appetite and prejudice can be expected, even though its ultimate excellence should not admit of dispute. It is found easier, by the short-sighted victims of disease, to palliate their torments by medicine than to prevent them by regimen. The vulgar of all ranks are invariably sensual and indocile; yet I cannot but feel myself persuaded that when the benefits of vegetable diet are mathematically proved, when it is as clear that those who live naturally are exempt from premature death as that nine is not one, the most sottish of mankind will feel a preference towards a long and tranquil, contrasted with a short and painful, life.