Imagine a perimeter around you, a space that will concentrate all the contents of your mind. Imagine that whatever is outside that perimeter you will not even be able to name it. You won't even be able to imagine it, because outside the perimeter there are no mental images. You can stand at the edge of the perimeter, and expand it by deconstructing the contents of your mind, by being creative. But in order to get out of the perimeter it will be useless to keep imagining, you will need to strip yourself of everything.