In I Am a Strange Loop, Douglas Hofstadter blends philosophy and personal reflection to explore how self and consciousness emerge from self-referential loops in the brain.

I specialize in thinking about thinking. (xv)

What gives us word-users the right to make life-and-death decisions concerning other living creatures that have no words? In the final analysis, it is simply because might makes right. (18)

Even though I sincerely believe there is much more of a soul in the twenty-year-old than in the two-year-old, a view that will no doubt dismay many readers, I nonetheless have enormous respect for the potential of the two-year-old to develop a much larger soul over the course of a dozen or so years. (23)

A brain is a thinking machine. (27)

Our existence as animals whose perception is limited to the world of everyday macroscopic objects forces us, quite obviously, to function without reference to entities and processes at microscopic levels. (34)

Different levels of description have different levels of utility. (34)

Symbols in the brain are the neurological entities that correspond to concepts. (76)

Does a mosquito (of course without using words) divide the external world up into mental categories? (77)

Is a toilet aware, no matter how slightly, of its water level? (78)

I would be quite happy to compare a mosquito’s inner life to that of a flush toilet. (79)

Now if they truly believe that mosquitoes are quite possibly every bit as sentient as themselves, then how come they’re willing to snuff mosquito lives in an instant? (80)

I think you have to judge people’s opinions not by their words, but by their deeds. (80)

A dog’s soul is considerably “smaller” than a human one. (83)

A spectacular evolutionary gulf opened up at some point as human beings were gradually separating from other primates: their category systems became arbitrarily extensible. (83)

Concepts could nest inside each other hierarchically. (83)

The word “real” like so many words seems to imply a sharp, clear-cut dichotomy. (90)

What is realest to each of us, in the end, is ourself. (92)

The thesis of this book is that in a non-embryonic, non-infantile human brain, there is an abstract pattern that gives rise to what feels like a self. (95)

In any strange loop that gives rise to human selfhood, the level-shifting acts of perception, abstraction, and categorization are central, indispensable elements. (187)

I have no qualms about dismissing the idea of there being a strange loop of selfhood in as tiny and swattable a brain as that of a mosquito. (189)

Why is it that only brains are conscious, and not kneecaps or kidneys? (194)

Why aren’t cows just as conscious as we are? (194)

Our innate blindness to the world of the tiny forces us to hallucinate a profound schism between the goal-lacking material world and a goal-pervaded abstract world of hopes, beliefs, joys, and fears. (204)

There is no strange loop inside a mosquito’s head. What goes for mosquitoes goes also for human babies, and all the more so for human embryos. (209)

Mosquitoes are doomed to soullessness. (209)

A human neonate, devastatingly cute though it may be, simply has no “I”. (209)

Your brain is inhabited to some extent by other I’s, other souls. (248)

The cells inside a brain are not the bearers of its consciousness; the bearers of consciousness are patterns. The pattern of organization is what matters, not the substance. (257)

Patterns can be copied from one medium to another. (257)

Every human consciousness or “I” lives at once in a collection of different brains. (259)

I have used a few key terms pretty much interchangeably: self, soul, I, a light on inside, and consciousness. To me, these are all names for the same phenomenon. (275)

Consciousness is thinking. (276)

My brain (and yours too, dear reader) is constantly seeking to label, to categorize, to find precedents and analogues — in other words, to simplify while not letting essence slip away. (279)

What you call “I” is an outcome, not a starting point. (284)

Do cows savor the deep purple of a flower just as intensely as you do? (285)

Those little sensual experiences (e.g., seeing purple, tasting chocolate) are to the grand pattern of your mental life as the letters in a novel are to the novel’s plot and characters — irrelevant, arbitrary tokens, rather than carriers of meaning. (287)

The “I” is a hallucination perceived by a hallucination. (293)

We are macroscopic creatures, and so our perception and our categories are enormously coarse-grained relative to the fabric at which the true causality of the universe resides. (297)

We’re stuck at the level of radical simplification. (297)

“I” is always both concrete and abstract at the same time. It is just one thing described in two phenomenally different ways. (298)

It is language that is so different from other structures in the universe. (298)

When perception twists back and focuses on itself, you get rich, magical-seeming consequences. (300)

If some day there really are machines that think, then by definition they will be machines who think. (319)

In our culture there is a dogma that states, roughly, that all human lives are worth exactly the same amount. And yet we violate that dogma routinely. (343)

We don’t hesitate for a moment to draw a huge distinction between the values of a human life and an animal life, and between the values of the lives of different “levels” of animals. (344)

Most people I know would rate cat souls as higher than cow souls. (344)

I think it’s obvious, or nearly so, that mosquitoes have no conscience and likewise no consciousness, hence nothing meriting the word “soul.” These flying, buzzing, blood-sucking automata are more like miniature heat-seeking missiles than like soulful beings. Can you imagine a mosquito experiencing mercy or pity or friendship? (348)

Having a conscience — a sense of morality and of caring about doing “the right thing” towards other sentient beings — strikes me as the most natural and hopefully also the most reliable sign of consciousness in a being. (349)

Mosquitoes may “experience” the quale of the taste of blood, but they are unconscious of that quale, in just the way that toilets respond to but are totally unconscious of the various qualia of different water levels. (355)

Our very nature is such as to prevent us from fully understanding its very nature. (363)

Poised midway between the unvisualizable cosmic vastness of curved spacetime and the dubious, shadowy flickerings of charged quanta, we human beings, more like rainbows and mirages than like raindrops or boulders, are unpredictable self-writing poems — vague, metaphorical, ambiguous, and sometimes exceedingly beautiful. (363)

Book Notes

I am a fan of Hofstadter’s work (e.g., Surfaces and Essences), yet I reject his core thesis. While recursion may birth self-awareness, I am not a strange loop. Neither are you.

It’s a mistake to muddle intelligence and language with “self, soul, I, a light on inside, and consciousness” and offensive to say “normal adult humans” are more conscious or have a bigger soul than “mentally retarded, brain-damaged, and senile humans.”

Sadly, Hofstadter is a victim of his own flawed mental model. In a 2023 interview, he says that generative AI chatbots (e.g., ChatGPT) make him feel diminished and inferior.

There’s a degree of consciousness here. It merits the word “I”.

It’s a traumatic experience when your core beliefs about the world start collapsing.

AI will become as incomprehensible to us as we are to cockroaches.

It’s terrifying. I hate it. I think about it practically all the time, every single day, and it overwhelms me and depresses me in a way that I haven’t been depressed in a very long time.

If you conflate intellect and language proficiency with self and soul, it’s easy to see why large language models may threaten your self-esteem. But if you know Descartes was wrong and embrace I feel, therefore I am, then ChatGPT is no threat to your identity.

I tackled these topics in my last book and will revisit them in my next, as I explore the strange loops and intertwingularities of classification, consciousness, and creativity.

As I work on Natural Information Architecture, I’m sharing notes and quotes from my sources of inspiration and provocation. As always, your questions and suggestions are welcome.