Insanity is a highly specialized mechanism. It is not a mechanism that one suddenly descends into. It is an assumed mechanism, like death. A very high-toned case can all of a sudden kick off the body. Similarly, a person can kick himself into insanity rather easily.
Insanity says, "Even death would not avail me, but I am not further responsible and I should not further be punished." It is not a consequence of a great many actions. We can synthesize the feeling of insanity by "can't reach / must reach; can't withdraw / must withdraw." And we get the same sensation.
Sensation can turn on almost anywhere. It isn't something that is peculiar then to the tone scale. It would actually be incorrect to mark some portion of the tone scale "insane". But it is a guideline to mark some portion of the tone scale with degrees of unawareness, and that is what the tone scale is.
There are types of awareness which are rather interesting to observe. There are inverted awarenesses. The individual cannot be aware of anything right where he is but can be aware of something at a distance. The inversion of that is that he can't be aware of anything at a distance, but he can be aware of something right where he is.
This process gives us this at once: "Point out some places where you are not." We start to run this technique and the individual at first finds stuff way out in another universe and then starts coming in, and eventually he finds something fairly close to him, and then eventually he points to stuff that goes way out again, and then it comes in and it goes out, and it comes in. It is an interesting progression.
He is walking through various inversions. And so we have awarenesses alternating inside and out. And we have awarenesses also varying on the dynamics and we have awarenesses varying on the Know-to-Mystery scale. We have these things paralleled. We can get an awfully good notion of what we are up to with a person.