He thought, in your most secret dreams you cut a niche for yourself, and it is finished early, and then you wait for someone to come along to fill it… - Theodore Sturgeon

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He thought, in your most secret dreams you cut a niche for yourself, and it is finished early, and then you wait for someone to come along to fill it — but to fill it exactly, every cut, curve, hollow and plane of it. And people do come along, and one covers up the niche, and another rattles around inside it, and another is so surrounded by fog that for the longest time you don’t know if she fits or not; but each of them hits you with a tremendous impact. And then one comes along and slips in so quietly that you don’t know when it happened, and fits so well you almost can’t feel anything at all. And that is it.
“What are you thinking about?” she asked him.
He told her, immediately and fully. She nodded as if he had been talking about cats or cathedrals or cam-shafts, or anything else beautiful and complex. She said, “That’s right. It isn’t all there, of course. It isn’t even enough. But everything else isn’t enough without it.”
“What is ‘everything else’?