... unknown as something that is veiled from man, shrouded perhaps by a terrifying context, but which, nonetheless, is within man's reach. The unknown becomes known at a given time. The unknowable, on the other hand, is the indescribable, the unthinkable, the unrealizable. It is something that will never be known to us, and yet it is there, dazzling and at the same time horrifying in its vastness.
... In the face of unknown, man is adventurous. It is a quality of the unknown to give us a sense of hope and happiness. Man feels robust, exhilarated. Even the apprehension that it arouses is very fulfilling. ... man is at his best in the face of unknown.
... whenever what is taken to be unknown turns out to be unknowable the results are disastrous. Seers feel drained, confused. A terrible oppression takes possession of them. Their body lose tone, their reasoning and sobriety wander away aimlessly, for the unknowable has no energizing effect whatsoever. It is not within human reach; therefore, it should not be intruded upon foolishly or even prudently. ... ---pp. 46-47, ``The Fire From Within,'' Carlos Castaneda
... if seers can hold their own in facing petty tyrants, they can certainly facet unknown with impunity, and then they can even stand the presence of the unknowable.
``The average man's reaction is to think that the order of that statement should be reversed ... a seer who can hold his own in face of the unknown can certainly face petty tyrants. But that's not so. ... We know better now. We know that nothing can temper the spirit of a warrior as much as the challenge of dealing with impossible people in position of power. Only under those conditions can warriors acquire the sobriety and serenity to stand the pressure of unknowable.'' ---pp.32-33, ``The Fire From Within,'' Carlos Castaneda
All in all, the ability to read other minds develops early in human infancy, and is deeply influenced by cues from the eyes. The phenomenon requires no explicit, conceptual grasp of other minds, but rather relies on direct experience of others’ emotional and mental states. ``How we learn to read another’s mind by looking into their eyes,'' Tobias Grossmann, https://aeon.co/ideas/how-we-learn-to-read-anothers-mind-by-looking-into-their-eyes