Feb 18 JDN 2460360

One of the biggest problems with the rationalist community is an inability to express sincerity and reverence.

I get it: Religion is the world’s greatest source of sincerity and reverence, and religion is the most widespread and culturally important source of irrationality. So we declare ourselves enemies of religion, and also end up being enemies of sincerity and reverence.

But in doing so, we lose something very important. We cut ourselves off from some of the greatest sources of meaning and joy in human life.

In fact, we may even be undermining our own goals: If we don’t offer people secular, rationalist forms of reverence, they may find they need to turn back to religion in order to fill that niche.

One of the most pernicious forms of this anti-sincerity, anti-reverence attitude (I can’t just say ‘insincere’ or ‘irreverent’, as those have different meanings) is surely this one:

Love is just a chemical reaction.

(I thought it seemed particularly apt to focus on this one during the week of Valentine’s Day.)

On the most casual of searches I could find at least half a dozen pop-sci articles and a YouTube video propounding this notion (though I could also find a few articles trying to debunk the notion as well).

People who say this sort of thing seem to think that they are being wise and worldly while the rest of us are just being childish and naive. They think we are seeing something that isn’t there. In fact, they are being jaded and cynical. They are failing to see something that is there.

(Perhaps the most extreme form of this was from Rick & Morty; and while Rick as a character is clearly intended to be jaded and cynical, far too many people also see him as a role model.)

Part of the problem may also be a failure to truly internalize the Basic Fact of Cognitive Science:

You are your brain.

No, your consciousness is not an illusion. It’s not an “epiphenomenon” (whatever that is—I’ve never encountered one in real life). Your mind is not fake or imaginary. Your mind actually exists—and it is a product of your brain. Both brain and mind exist, and are in fact the same.

It’s so hard for people to understand this that some become dualists, denying the unity of the brain and the mind. That, at least, I can sympathize with, even though we have compelling evidence that it is wrong. But there’s another tack people sometimes take, eliminative materialism, where they try to deny that the mind exists at all. And that I truly do not understand. How can you think that nobody can think? Yet intelligent, respected philosophers have claimed to believe such things.

Love is one of the most important parts of our lives.

This may be more true of humans than of literally any other entity in the known universe.

The only serious competition comes from other mammals: They are really the only other beings we know of that are capable of love. And even they don’t seem to be as good at it as we are; they can love only those closest to them, while we can love entire nations and even abstract concepts.

And once you go beyond that, even to reptiles—let alone fish, or amphibians, or insects, or molluscs—it’s not clear that other animals are really capable of love at all. They seem to be capable of some forms of thought and feeling: They get hungry, or angry, or horny. But do they really love?

And even the barest emotional capacities of an insect are still categorically beyond what most of the universe is capable of feeling, which is to say: Nothing. The vast, vast majority of the universe feels neither love nor hate, neither joy nor pain.

Yet humans can love, and do love, and it is a large part of what gives our lives meaning.

I don’t just mean romantic love here, though I do think it’s worth noting that people who dismiss the reality of romantic love somehow seem reluctant to do the same for the love parents have for their children—even though it’s made of pretty much the same brain chemicals. Perhaps there is a limit to their cynicism.

Yes, love is made of chemicals—because everything is made of chemicals. We live in a material, chemical universe. Saying that love is made of chemicals is an almost completely vacuous statement; it’s basically tantamount to saying that love exists.

In other contexts, you already understand this.

“That’s not a bridge, it’s just a bunch of iron atoms!” rightfully strikes you as an absurd statement to make. Yes, the bridge is made of steel, and steel is mostly iron, and everything is made of atoms… but clearly there’s a difference between a random pile of iron and a bridge.

“That’s not a computer, it’s just a bunch of silicon atoms!” similarly registers as nonsense: Yes, it is indeed mostly made of silicon, but beach sand and quartz crystals are not computers.

It is in this same sense that joy is made of dopamine and love is made of chemical reactions. Yes, those are in fact the constituent parts—but things are more than just their parts.

I think that on some level, even most rationalists recognize that love is more than some arbitrary chemical reaction. I think “love is just chemicals” is mainly something people turn to for a couple of reasons: Sometimes, they are so insistent on rejecting everything that even resembles religious belief that they end up rejecting all meaning and value in human life. Other times, they have been so heartbroken, that they try to convince themselves love isn’t real—to dull the pain. (But of course if it weren’t, there would be no pain to dull.)

But love is no more (or less) a chemical reaction than any other human experience: The very belief “love is just a chemical reaction” is, itself, made of chemical reactions.

Everything we do is made of chemical reactions, because we are made of chemical reactions.

Part of the problem here—and with the Basic Fact of Cognitive Science in general—is that we really have no idea how this works. For most of what we deal with in daily life, and even an impressive swath of the overall cosmos, we have a fairly good understanding of how things work. We know how cars drive, how wind blows, why rain falls; we even know how cats purr and why birds sing. But when it comes to understanding how the physical matter of the brain generates the subjective experiences of thought, feeling, and belief—of which love is made—we lack even the most basic understanding. The correlation between the two is far too strong to deny; but as far as causal mechanisms, we know absolutely nothing. (Indeed, worse than that: We can scarcely imagine a causal mechanism that would make any sense. We not only don’t know the answer; we don’t know what an answer would look like.)

So, no, I can’t tell you how we get from oxytocin and dopamine to love. I don’t know how that makes any sense. No one does. But we do know it’s true.

And just like everything else, love is more than the chemicals it’s made of.