The laws of motion and the properties of matter suffice to account for every phenomenon, or combination of phenomena exhibited in the Universe. That certain animals exist in certain climates, results from the consentaneity of their frames to the circumstances of their situation: let these circumstances be altered to a sufficient degree, and the elements of their composition must exist in some new combination no less resulting than the former from those inevitable laws by which the Universe is governed.

It is the necessary consequence of the organisation of man, that his stomach should digest his food: it inevitably results also from his gluttonous and unnatural appetite for the flesh of animals that his frame be diseased and his vigour impaired; but in neither of these cases is adaptation of means to end to be perceived. Unnatural diet, and the habits consequent upon its use are the means, and every complication of frightful disease is the end, but to assert that these means were adapted to this end by the Creator of the world, or that human caprice can avail to traverse the precautions of Omnipotence, is absurd. These are the consequences of the properties of organised matter; and it is a strange perversion of the understanding to argue that a certain sheep was created to be butchered and devoured by a certain individual of the human species, when the conformation of the latter, as is manifest to the most superficial student of comparative anatomy, classes him with those animals who feed on fruits and vegetables.²⁴

The means by which the existence of an animal is sustained, requires a designer in no greater degree than the existence itself of the animal. If it exists, there must be means to support its existence. In a world where omne mutatur nihil interit, no organised being can exist without a continual separation of that substance which is incessantly exhausted, nor can this separation take place otherwise than by the invariable laws which result from the relations of matter. We are incapacitated only by our ignorance from referring every phenomenon, however unusual, minute or complex, to the laws of motion and the properties of matter; and it is an egregious offence against the first principles of reason to suppose an immaterial creator of the world, in quo omnia moventur sed sine mutuâ passione: which is equally a superfluous hypothesis in the mechanical philosophy of Newton, and a useless excrescence on the inductive logic of Bacon.

What then is this harmony, this order which you maintain to have required for its establishment, what it needs not for its maintenance, the agency of a supernatural intelligence? Inasmuch as the order visible in the Universe requires one cause, so does the disorder whose operation is not less clearly apparent, demand another. Order and disorder are no more than modifications of our own perceptions of the relations which subsist between ourselves and external objects, and if we are justified in inferring the operation of a benevolent power from the advantages attendant on the former, the evils of the latter bear equal testimony to the activity of a malignant principle, no less pertinacious in inducing evil out of good, than the other is unremitting in procuring good from evil.

If we permit our imagination to traverse the obscure regions of possibility, we may doubtless imagine, according to the complexion of our minds, that disorder may have a relative tendency to unmingled good, or order be relatively replete with exquisite and subtile evil. To neither of these conclusions, which are equally presumptuous and unfounded, will it become the philosopher to assent. Order and disorder are expressions denoting our perceptions of what is injurious or beneficial to ourselves, or to the beings in whose welfare we are compelled to sympathise by the similarity of their conformation to our own.²⁵

A beautiful antelope panting under the fangs of a tiger, a defenceless ox, groaning beneath the butcher’s axe, is a spectacle which instantly awakens compassion in a virtuous and unvitiated breast. Many there are, however, sufficiently hardened to the rebukes of justice and the precepts of humanity, as to regard the deliberate butchery of thousands of their species, as a theme of exultation and a source of honour, and to consider any failure in these remorseless enterprises as a defect in the system of things. The criteria of order and disorder are as various as those beings from whose opinions and feelings they result.

Populous cities are destroyed by earthquakes, and desolated by pestilence. Ambition is everywhere devoting its millions to incalculable calamity. Superstition, in a thousand shapes, is employed in brutalising