This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
The Kena Upanishad opens with a question a student might genuinely ask a teacher: by whose will does the mind move toward its object, by whose command does breath go forth, what power sends speech out into words. It is the kind of question that expects a straightforward answer, a name, a cause, a mechanism, and the Upanishad refuses to give one, teaching instead that the very asking already misses the target, since the power in question is not an object thought can arrive at from outside.
The text then makes the same point a second way, through story rather than argument. The gods win a battle and each claims personal credit for the victory, only to be confronted by a presence none of them can identify, a figure who is never named but who is plainly the same reality the opening verses tried and failed to describe directly. Fire and wind, questioned in turn, cannot even burn a blade of grass or move it in the presence of this power, proof of how far their own strength falls short of what actually secured their victory. Only Indra draws close enough to sense what he has met, and even he never quite grasps it in the way the human student in the first half hoped to.
Read together, question and story make the same claim from two directions: whatever moves mind, breath, speech and even the gods themselves in their moment of triumph is not the kind of thing that yields to being named, only to being approached, and even then imperfectly.