A person walks around outside all day, and in the end he has to go back to one place.
That place does not have to be big. It may be a rented room, an old house lived in for years, a bed in a dormitory. But once the door closes, whatever happened outside has nothing to do with you for a while — you can say nothing, you can sit for a bit without turning on the light, you can kick your shoes off wherever they land. The place where you can be "uninvolved for a while" is home.
In chapter 80 of the Daodejing there is the phrase an qi ju（安其居 — a dwelling they can rest in）. It stands in a row with gan qi shi（甘其食 — to savour their own food）, mei qi fu（美其服 — to wear their own clothes well）, le qi su（乐其俗 — to take joy in their own customs）. None of the four is about wealth. All of them are about a person being content with his own days: food that tastes good, clothes that look decent, a dwelling he is at rest in, a life lived by his own customs. (These are our own renderings, not a quoted translation.)
So what does the word an（安 — settled, with a place to belong） actually say?
It says: no more thinking about it.
For the first few months in a new place, you keep moving things. The pot goes on the left, then back to the right. The shoe rack goes by the door, turns out to block the way, and moves to another corner. A box goes under the bed first; later the top of the cupboard feels better. In those months you are not living there, you are arranging it. Every object keeps reminding you that it exists, because you two have not come to terms yet.
Then one day you stop moving things. You know which shelf the soy sauce is on, where the children's shoes go, where the laundry dries on a rainy day. The objects are still there, but you no longer look at them. Each has its place, and you have your days — and from that day on, the place is no longer just "where I live." It has become the place you return to.
"A place the heart returns to" is not a sentimental phrase. It is something very concrete: a person needs one place where he does not have to explain himself. Outside, you have to say why you were late, why you disagree, why it is not finished yet. At home you do not. You can be tired, you can look unpresentable, you can have accomplished nothing, and the place will not think less of you for it.
So home and house are not the same thing.
A house is floor area, orientation, price. A home is "my things are here, my people are here, my habits are here." A house can be large and empty; it can also be small and full. What makes a place a home is never how much it holds, but whether it carries the traces of someone having lived there — a pot used for years, a sofa sat into a hollow, the pair of shoes by the door that never gets put away.
A person spends his whole life doing one and the same thing: slowly turning a place that is not home into home. Move in, arrange, shift, get used to it, and then settle. There is no shortcut in that — a place that someone else arranged for you still has to be rearranged by you before it is yours.
The three words an qi ju（安其居 — a dwelling they can rest in） — we use them as a signature.
They do not say what we do. They say what we hold to: a person should have such a place — where he is settled, where he does not have to explain, where he can lay his load down.
The world outside asks a person to keep moving forward. A home is the place that lets him stop.