Opinion | Humans Are Animals. Let’s Get Over It.

If one were to read through the prefaces and first paragraphs of the canonical works of Western philosophy, one might assume the discipline’s primary question to be this: What makes us humans so much better than all the other animals? Really, it’s astonishing how relentless this theme is in the whole history of philosophy. The separation of people from, and the superiority of people to, members of other species is a good candidate for the originating idea of Western thought. And a good candidate for the worst.

The Great Philosopher will, before addressing himself to the deep ethical and metaphysical questions, pause for the conventional, ground-clearing declaration: “I am definitely not a squirrel.” This is evidently something that needs continual emphasizing.

Rationality and self-control, as philosophers underline again and again, give humans a value that squirrels lack (let’s just stick with this species for the time being), a moral status unique to us. We are conscious, and squirrels, allegedly, are not; we are rational, and squirrels are not; we are free, and squirrels are not.

We can congratulate ourselves on the threat averted. But if we truly believed we were so much better than squirrels, why have we spent thousands of years driving home the point?

It’s almost as though the existence of animals, and their various similarities to humans, constituted insults. Like a squirrel, I have eyes and ears, scurry about on the ground and occasionally climb a tree. (One of us does this better than the other does.) Our shared qualities — the fact that we are both hairy or that we have eyes or we poop, for example — are disconcerting if I am an immortal being created in the image of God and the squirrel just a physical organism, a bundle of instincts.

One difficult thing to face about our animality is that it entails our deaths; being an animal is associated throughout philosophy with dying purposelessly, and so with living meaninglessly. It is rationality that gives us dignity, that makes a claim to moral respect that no mere animal can deserve. “The moral law reveals to me a life independent of animality,” writes Immanuel Kant in “Critique of Practical Reason.” In this assertion, at least, the Western intellectual tradition has been remarkably consistent.

The connection of such ideas to the way we treat animals — for example, in our food chain — is too obvious to need repeating. And the devaluation of animals and disconnection of us from them reflect a deeper devaluation of the material universe in general. In this scheme of things, we owe nature nothing; it is to yield us everything. This is the ideology of species annihilation and environmental destruction, and also of technological development.

Further trouble is caused when the distinctions between humans and animals are then used to draw distinctions among human beings. Some humans, according to this line of thinking, are self-conscious, rational and free, and some are driven by beastly desires. Some of us transcend our environment: Reason alone moves us to action. But some of us are pushed around by physical circumstances, by our bodies. Some of us, in short, are animals — and some of us are better than that. This, it turns out, is a useful justification for colonialism, slavery and racism.

The classical source for this distinction is certainly Aristotle. In the “Politics,” he writes, “Where then there is such a difference as that between soul and body, or between men and animals (as in the case of those whose business is to use their body, and who can do nothing better), the lower sort are by nature slaves.” The conclusion is final. “It is better for them as for all inferiors to be under the rule.”

Every human hierarchy, insofar as it can be justified philosophically, is treated by Aristotle by analogy to the relation of people to animals. One might be forgiven for thinking that Aristotle’s real goal is not to establish the superiority of humans to animals, but the superiority of some people to others.

“The savage people in many places of America,” writes Thomas Hobbes in “Leviathan,” responding to the charge that human beings have never lived in a state of nature, “have no government at all, and live in this brutish manner.” Like Plato, Hobbes associates anarchy with animality and civilization with the state, which gives to our merely animal motion moral content for the first time and orders us into a definite hierarchy. But this line of thought also happens to justify colonizing or even extirpating the “savage,” the beast in human form.

Our supposed fundamental distinction from “beasts, “brutes” and “savages” is used to divide us from nature, from one another and, finally, from ourselves. In Plato’s “Republic,” Socrates divides the human soul into two parts. The soul of the thirsty person, he says, “wishes for nothing else than to drink.” But we can restrain ourselves. “That which inhibits such actions,” he concludes, “arises from the calculations of reason.” When we restrain or control ourselves, Plato argues, a rational being restrains an animal.

In this view, each of us is both a beast and a person — and the point of human life is to constrain our desires with rationality and purify ourselves of animality. These sorts of systematic self-divisions come to be refigured in Cartesian dualism, which separates the mind from the body, or in Sigmund Freud’s distinction between id and ego, or in the neurological contrast between the functions of the amygdala and the prefrontal cortex.

I’d like to publicly identify this dualistic view as a disaster, but I don’t know how to refute it, exactly, except to say that I don’t feel myself to be a logic program running on an animal body; I’d like to consider myself a lot more integrated than that. And I’d like to repudiate every political and environmental conclusion ever drawn by our supposed transcendence of the order of nature. I don’t see how we could cease to be mammals and remain ourselves.

There is no doubt that human beings are distinct from other animals, though not necessarily more distinct than other animals are from one another. But maybe we’ve been too focused on the differences for too long. Maybe we should emphasize what all us animals have in common.

Our resemblance to squirrels doesn’t have to be interpreted as a threat to our self-image. Instead, it could be seen as a hopeful sign that we will someday be better at tree leaping.

Crispin Sartwell teaches philosophy at Dickinson College in Carlisle, Pa. His most recent book is “Entanglements: A System of Philosophy.”

Now in print: “Modern Ethics in 77 Arguments,” and “The Stone Reader: Modern Philosophy in 133 Arguments,” with essays from the series, edited by Peter Catapano and Simon Critchley, published by Liveright Books.

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