The self
The author's sense of his own self is not merely part of the book's intention; it seems to be the entire intention of the artwork. The author seems to have accomplished some state of consciousness which compels him to explain himself to his own self. It could be that the artwork were originally intended as a majestic exploration of the complexities of his self, told in an ambivalent and tangentially discontinuous way which would mirror the aesthetic of having a mind which randomly associates suggestions for a person to consider. However, because this book was published posthumously, the reader must also consider that it might have been the truly private writings of a person who willingly departed more sane kinds of consciousness to explore his self one last time before death.
Consideration and silence
The book seems to have an apology as it's title. The word Disquiet is not the same as "sound." Sound associates to pleasant ideas, and perhaps noise associates to annoying ideas, but "disquiet" associates to disturbance or a breach of silence. That is exactly how the book feels, too, because the reader seems to be getting glimpses into the author's mind, but embedded in a larger domain of psychic material which is not eligible for description through language, so that at times, the book takes on an abstract imagery of the void. The abstract qualities of silence relate to the concrete imagery of oblivion.
The imagery of fading memory
The imagery that best describes the vignettes is the imagery of fading. The memories fade like old photographs, until eventually, all that remains is a jumbled bit of information, and whatever extraordinarily specific emotion was saved in that association. Because the author has experienced a lot of time, his mind is full of seemingly infinite ideas, bits of knowledge, fragments of memory, etc. However, he only experiences them serially and through vague psychic associates with a function the author cannot quite isolate. The convergence of these faded memories and strong emotion makes the book melancholic and Saturnal.
Doom
As mentioned above, there are a lot of thematic ideas in this expression of self which constitute uncomfortable truths. If a truth is ignorable and unpleasant, than a lot people will probably choose to forget about it and move on. Doom is the imagery which forbids the person from forgetting the usually forgettable aspects of life—like death, oblivion, and the eventual implosion of the universe or whatever. The point here is that as age increases, daily pain increases in the body and mind, so that this author ends up explaining a naturally spiritual landscape to a reader who might not realize that the author is not being religious, he is merely responding to the doom of his knowledge of death. Death is not some far-off abstract concept; it is an eminent threat with the concrete frustrations of aging to remind him of it. Death further defines the aesthetic of this book because it was published posthumously.
