Read if you really want to know what the movie is about

Rating: 9/10 (5 December 2017)

Great movie, however it is a 9 for me because I don't like too much when the movie makes fully sense in the last 5 minutes, then you have to rewind it in your mind to fit all the pieces together.
Movie concept spoiler below:
The girl is not his wife: she is his muse, which is the inspirational goddesses of literature, science, and the arts in Greek mythology.
There is really not too much to be said, the rest you have to watch it under this concept. If you don't agree, keep reading.
First of all, you have to understand that the girl is not a real person but a personification. She is not the house or the world or mother nature for the sake. The fact that in the movie she interacts with other people could be seen as the personification in itself, otherwise she would just be kind of an imaginary friend, but the movie would be totally different.
Lets follow the movie sequence:
1 - It starts with her being on fire. While watching the movie, I thought that it was also the last scene, since many movies do that, but it isn't, meaning that she burnt "the house" (by the way, the house never burnt, the muse died time after time like a phoenix). Later on he tells that the house burnt down, then he found the crystal, and then she came. Confused? Don't be, he wrote a book or a poem before which of course he couldn't have done without his muse, then the muse died, again, because the poem or book was done, and then the muse came back for another book, and so on.
2 - He invited people to live in the house for the purpose that he explained, to grasp new ideas. In the meantime we wrote something but not too good, because these people broke it, meaning that they read it and disliked it. These intruders are necessarily fictional and real: for him are real people telling him "why don't you use that word instead of this one", or for i.e. "why don't you change this for that?". But in fact they are just meddling between the writer and his muse.
3 - While the intruder's son is killed by his brother, he tells some words regarding life and dead, and you will hear the exact phrase again later on. Here the killer tells her that she knows what being lonely is. By the way, nobody died, but a book in progress went straight to the recycle bin.
4 - In the mayhem that follows they have sex and the next morning right after waking up, she tells him that she is pregnant, she knows it just like that, and what happened next? Since she is just a personification, it means that an idea just developed and he starts writing it right away. Now you see that the baby is nonexistent but a new book is in progress.
5 - From one scene to the next one she is about a week to give birth, meaning that the book is almost finished.
6 - He tells his muse that the paper is finished, she reads it and then asks him if she is going to lose him. Next second the phone rings and she learns that his publisher is congratulating him. She is set back by this but of course his editor read it already, giving meaning to the editor's work = corrections = suggestions = intruders. Of course, if instead of being presented as a person she would have been presented as a muse, her feeling wouldn't matter at all, and in fact they don't, that's why she feel secluded and ignored from everyone. Why is she still pregnant? Because the book isn't published yet.
7 - Then there is a first print, just a few copies for the critics and people alike, and people from everywhere starts to congratulate him.
8 - Her existence is compromised, she isn't needed anymore for this book, hence the apocalypse.
9 - Then the book is reprinted for the general public, that is when the baby is born.
10 - The book is so good that it is devoured by the readers, it is not cannibalism for Christ's sake!
11 - So the muse is done, the book is done, and like the phoenix bird she burns, unlike him, but inside her there is the seed for the his next work, a new idea, and he takes it from inside her. Notice that when he places the new crystal in the pedestal, the house becomes again restored, as in the beginning. Also while he carries her outside, he tells her that he is bringing her to the beginning again.
Notice also that the house is the book's current state. The sink brakes, the floor does too, those are publisher's and friend's intrusions or corrections if you like.
So if you didn't look at it under this scope, watch it again if you want so watch a different movie.