Interstellar was a mind-blowing movie. The writing, directing, cinematography, and acting was all exceptional. This film was the kind that made the watchers have to think and really pay attention to everything that happens. I find that something to be expected when you're watching a Christopher Nolan film, especially when his brother, Jonathan, works with him as well.
This film was not easy to understand, it took watching it a few times to be able to at least understand it half way. I still may not have the most accurate answers to explain it, but there is something I noticed about this film, that helps make sense of the ending of the movie, as well as certain things that happened which led up to it. There are two particular quotes from two different characters, that if you keep in mind will almost tell the movie- not saying, that is actually possible anyway.
Cooper- "Once you're a parent, you're the ghost of your children's future."
Ghosts are usually of the past, they are no longer alive but their presence is felt and their form is seen by the ones who knew them. As well, usually the main reason why they're "still around" is because the ones who love them can't let them go and move on in life.
Cooper was absent for so long in his children's lives. He was alive but so far ahead in space and time that he basically was just a memory to them. This is what makes him a ghost. He was someone of his children's past, that they loved and couldn't really let go of. So all that he was and meant, they carried with them, particularly Murph.
This is so significant because in the ending of the movie, once Cooper and TARS fell into the three-dimensional space, the tesseract, that was Cooper in the present for him which happened to be miles and years ahead of his daughter's form of present on earth. It was Cooper in that present that reached his daughter Murph in her present, that made sense of all that happened in her past, which helped her understand her present state. To make that clearer and more understandable, Cooper was the ghost that followed her when she was a young child, giving all the strange signs and codes. He, in the past, didn't understand it and she didn't quite know who it was, but way later on, in her future and once she was older, she understood and it took her father, even in his absence of being presently with her, to help her figure out what could save them all.
Brand- "Maybe it means something more - something we can't yet understand. Maybe it's some evidence, some artifact of a higher dimension that we can't consciously perceive. I'm drawn across the universe to someone I haven't seen in a decade, who I know is probably dead. Love is the one thing we're capable of perceiving that transcends dimensions of time and space. Maybe we should trust that, even if we can't understand it. All right Cooper. Yes. The tiniest possibility of seeing Wolf again excites me. That doesn't mean I'm wrong."
This statement by Brand is significant to the movie because, as the movie ends, we learn that two things, for sure, transcend space and time, and those two things are love and gravity.
- Gravity being used by the "they" in the movie, who are the ones that created the "three-dimensional space" and were years beyond both Cooper and Murph, who according to Cooper, were likely to be the descendants. So basically "they" understood space and time better then we would have, therefore, gravity could be used like technology, to transcend them and space to reach Cooper and TARS.
- Love being the thing that was even greater then gravity. Because it connected people to each other through life and death, as with Brand and Wolf. It connects people through distance that is un-measurable and time that goes on, as with Cooper and Murph who were years away from each other and large amounts of space was between them. It didn't fade or cease-to-exist because of these things, it was still present.
To add to that, that very love was the thing that kept them going, even when things went horribly wrong, people were lost, and the crew learned Dr. Brand's little secret, the idea of getting to see the ones they loved before all earth was destroyed it drove them, just as much as in the beginning the idea of giving their loved ones and humanity a better life motivated them.
Now this film is incredibly complex and filled with a science that I don't quite understand, so I could be quite wrong about some of what I'm saying or even all of it. I don't know the initial idea the Nolan brothers had when they created this film, but these are just the things that helped me kind of understand the movie as much as I do now .