The Tao of Architecture — On the Usefulness of What Isn't There

Walk into a room. Any room. Now ask yourself: what did you actually experience?

Not the walls. Not the ceiling. Not the floor. You passed through those. What you experienced — what you lived in for the moment you were there — was the space between them. The air. The emptiness. The volume that the walls held in place so that you could exist inside it.

This seems obvious once someone says it. That is usually the sign of a deep idea.

Amos Chang wrote a book about this in 1956 called The Tao of Architecture. It is 104 pages long. It changed how I see every building I have entered since I first read it. It is also a book about philosophy, not architecture specifically — and understanding why requires a short detour through a Chinese text that is roughly 2,500 years old and has been influencing architects, mostly without their knowing it, ever since.

The book itself — "The Tao of Architecture" on a desk or shelf, natural light from the side. The slim spine is part of the point: 104 pages that say more than most 400-page architecture books.

Lao Tzu's Chapter 11

The Tao Te Ching is one of the most translated texts in human history. Lao Tzu wrote it — or is said to have written it — around 500 BCE. It is a collection of 81 short chapters, most of them less than a page, addressing the nature of reality, the right way to live, and the underlying principle that governs both. The eleventh chapter is the one architects should read.

Here it is, as directly as I can render it in English:¹

Thirty spokes share a wheel's hub.
It is the center hole that makes the wheel useful.

Shape clay into a vessel.
It is the space within that makes it useful.

Cut doors and windows in a room.
It is the empty space that makes the room livable.

Therefore: what is present makes it valuable.
What is absent makes it useful.

Read that carefully. Lao Tzu is not making a poetic observation. He is making a physical claim about how things work. Let's go through each example.

A wheel with no hole at the hub is a solid disc. It cannot rotate on an axle. The thirty spokes that join at the center create the wheel's structural strength and visual form — but the reason the wheel exists, the reason it can do the thing a wheel does, is the emptiness at its center. The hole is not the absence of wheel. The hole is what makes it a wheel at all.

A clay vessel that has no interior space is a lump of clay. You can admire its form. You cannot put water in it. The walls of the vessel give it shape, protect the interior, present a surface to the world. But what you actually use — what you fill, what the vessel serves — is the emptiness inside. The clay is what makes the emptiness portable.

And a room. Cut doors and windows into a space enclosed by walls, and you have made something useful. But it is not the doors and windows that make it useful — it is the space that those openings connect to the world around them. The walls define the space. The space is what you live in.

Lao Tzu's conclusion: the material — the spoke, the clay, the wall — makes something present and therefore valuable. The immaterial — the void, the emptiness, the space — makes it useful. We spend most of our attention on what is present. We spend our lives inside what is absent.

Frank Lloyd Wright Read This

Frank Lloyd Wright is the most famous architect in American history, and he was also — unusually for a Western architect of the early 20th century — a serious reader of Lao Tzu. He cited Chapter 11 explicitly when discussing his own work. His formulation of it: "The reality of the building does not consist of the roof and walls, but in the space within to be lived in."²

You can see this operating in everything Wright built. His Prairie Houses — the low, horizontal buildings he designed in the early 1900s — abandoned the Victorian floor plan of separate enclosed rooms connected by corridors. Instead, Wright organized his houses around a continuous flowing space: living areas that opened into one another, the boundaries between them suggested rather than imposed. He was not making houses with interesting walls. He was making space with certain qualities and using walls to define those qualities.

Fallingwater, his most famous house, is usually described in terms of what you can see: the dramatic cantilevered terraces, the stone masses, the way it sits above a waterfall. But what Wright was actually designing was an experience of the sound and movement of Bear Run creek, heard through the floors and felt through the stone, from inside a set of carefully orchestrated spaces. The house is a device for being near water without getting wet. Everything structural is in service of that spatial experience.

A sketch or diagram showing negative space in a floor plan — ideally from your architecture school work or notes. The point is visual: mark the walls in solid black, leave the void white, and what you're left with is a drawing of emptiness defined by structure.

Unity Temple in Oak Park, Illinois — built in 1906, when Wright was 39 — is where he first made this philosophy explicit in concrete. He later called it "the first great room in the idea of an architecture for democracy."³ What he meant: it was the first building he designed from the inside out, starting with the spatial experience he wanted to create and working backward to the structure required to produce it. The walls of Unity Temple do not enclose a room. The room defines the walls.

What Amos Chang Added

Chang's contribution was to take Wright's intuition and give it systematic philosophical grounding. He was an architecture professor — first at Kansas State, later at other universities — and he had the background in both Chinese philosophy and Western modernism to see what Wright had sensed but not fully articulated.

The Chinese word for the void in architecture is xu (虛). It is not simply "empty space" in the sense of space that happens to have nothing in it. Xu is generative emptiness — the kind of emptiness that is full of potential, that allows things to happen, that enables life. Chang's argument: architecture that works, that feels alive rather than dead, that harmonizes rather than imposes, is architecture that understands xu. The intangible elements — the void, the space, the silence between structural masses — are not what's left over after you've built the building. They are what the building is for.

Chang organizes this around four ideas that he finds operating in both Taoist thought and modernist Western architecture:

Natural Life-Movement: Space should breathe. It should have direction and flow — not the forced circulation of a corridor layout, but the way air moves through a room when you open a window on a still day. Buildings that work at this level don't direct you mechanically. They make certain movements feel natural and others feel wrong, and you follow without being told to.

Variability and Complement: Solid and void are not opposites. They are partners. A dense, heavy wall makes adjacent space feel more open; a low ceiling before a high one makes the high one feel soaring. Neither element has its full meaning without the other. The Japanese concept of ma — interval, pause, the meaningful gap — operates on the same principle. The space between things is not absence. It is relationship.

Balance and Equilibrium: Not symmetry. Symmetry is a formal property of the walls. Equilibrium is an experiential property of the space — the feeling of things being in right proportion, held in a tension that feels stable. A perfectly symmetrical room can feel wrong. An asymmetrical one can feel exactly right. Chang argues that this is because balance is perceived by the body moving through space, not by the eye measuring walls.

Individuality and Unity: Each element in a building — each column, each opening, each material — maintains its own character while belonging to a larger whole. This is the Taoist conception of the individual within the ten thousand things: specific, unrepeatable, and simultaneously part of a pattern that includes everything. Great architecture has this quality. Every element feels necessary and none feels redundant.

Alan Watts, in the Same Room

Alan Watts spent much of his career explaining Eastern philosophy to Western audiences, and he kept returning to exactly the ideas Chang is working with. His formulation of the Tao: it is not a thing. It is the ground against which things appear. It is the silence that makes music audible, the stillness that makes motion perceptible, the background that makes the foreground exist.

He used an analogy I find impossible to forget: a figure and its background are not separate. You cannot have one without the other. The figure defines the background and the background defines the figure. If you remove the background, the figure doesn't become more visible — it disappears. The two arise together. They are, in some sense, the same thing viewed from different positions.

Applied to a building: the wall and the void it creates are not two things. They are one thing. The wall is the void seen from outside; the void is the wall experienced from inside. To design only the wall — to think of architecture as the making of structure — is to miss half of what you are making. Every wall is also making space. Every door is also making silence around the sound of entry. Every window is making framing around light that would otherwise be formless.

Watts also wrote about wu wei — non-action, or more precisely, action that does not force. The Tao moves through things without imposing itself; water finds the lowest point not by effort but by the simple logic of what water is. Great architecture has this quality too. You don't feel the designer's will in a space that works. You feel at ease. The building is not making an argument. It is simply being what it is, and what it is happens to be exactly right for the life happening inside it.

A space that embodies xu — strong void, minimal structure. A courtyard, a Japanese-influenced interior, a room where the emptiness is clearly the subject. Even a good hallway or stairwell where light defines the volume of air more than the walls do.

Why This Is Harder Than It Sounds

The difficulty is that we are trained to value what we can measure and quantify. We can measure walls. We can specify concrete and glass and steel. We can calculate structural loads and U-values and floor-to-ceiling heights. What we cannot put in a spec sheet is the quality of a void.

This is why most buildings fail at the level Chang is describing. Not because their walls are wrong, but because their designers were thinking about walls when they should have been thinking about space. The conference room that makes everyone tense. The bedroom that never quite lets you rest. The lobby that signals corporate authority rather than welcome. These failures are not material failures. They are spatial failures — failures of xu.

The buildings that get it right are the ones you remember for how they felt, not what they looked like. Tadao Ando's concrete walls are famous for their surface and craft, but what they actually do is create voids of extraordinary quality — controlled light, silence, the sound of water nearby — that make the experience of moving through his buildings feel like a kind of meditation. The Barcelona Pavilion by Mies van der Rohe, built in 1929 and rebuilt in 1986, is a building that is almost entirely void: marble planes and glass walls defining volumes of outdoor and indoor air, with virtually no enclosed rooms at all. You cannot tell where the building ends and the space around it begins. That ambiguity is the entire point.

How I Think About This Now

Architecture gave me a way of seeing that carries into everything else I do. When I was shooting weddings with the 200mm f/2, I was practicing a photographic version of xu — using a shallow depth of field to dissolve the background into void so that the subject stood inside a space defined by emptiness. I was not capturing what was there. I was constructing what wasn't there, so that what was there became visible.

When I sit in the garage late at night with the headphones on and the tubes glowing, the experience that matters is not the equipment. It is the quality of the space the music creates — the way a well-recorded piano occupies a silence, the way a voice sits in a room, the three-dimensional void that good audio reproduction produces inside a very small one. The 200mm dissolved visual space. The LTA Aero dissolves acoustic space. Lao Tzu would recognize both.

Chang's book is still in print, still under $20, and still 104 pages long. It will take you two hours to read it. It will change how you walk into buildings for the rest of your life — not because it tells you what to look for, but because it tells you what to stop ignoring.

What is present makes it valuable. What is absent makes it useful. Two and a half thousand years later, we are still figuring out what that means.