To whom or what do I refer when I use the name "One"?

Is there a recurring character named "One"?
Is it an impersonal pronoun for "you"?
Is it a sort-of metaphysical Unity?
Is it a symbolic, externalized "I"?
Is it that "One" is many things?

Do I know if I know?
No; that is,
I don't know if I know;
while that is not to say
"no"
to any of my prior questions,
I can't truly say
"yes"
to any, either,
for "One"
always seems
to shift,
to me,
and could be
any, all, or none
at any given Time

And so, I suppose,
it is to say: *"perhaps One knows"