2949. This can also be illustrated by every movement of thought and speech. Human beings think analytically, or according to the deepest secrets of analytical philosophy, and still do not know them. So also do they speak and act, but when they reach out to learn how a matter stands, thus thinking, speaking and acting according to knowledge, then they turn themselves away from those deepest secrets, which guide, and they fence themselves in. And insofar as such knowledge is present and rules, so far they become insane and stupid; insofar as that most secret guidance [is present and rules], and not self, so far they possess the faculty of understanding and are able to be moved by those [deepest secrets]. 1748, 27 Aug. This was corroborated further by the [action of] muscles. When one is acting voluntarily, if one knows which muscles are acting, and which tissues, and focuses the mind on the muscle and tissue, thus trying to command it to act, while one is concentrating on it the muscle cannot act; if one stops, it acts.