The onrush of thoughts, no matter how involuntary as to velocity and timbre, is imbued with the quality of original willfulness, as it was discovered in early childhood along with language. But this skin of 'I want' that what must now be thought through wears is just as must to divert attention away from the equal or larger mass of 'I don't want' and that it how it can come to seem so like mental debris, just stuff that no one wants blowing dustily through the same empty place.