There are several words often used more or less indiscriminately to express what we mean when we say we know anything, and as knowing is known only to a knower, words relating to knowing are not definable ultimately other than by appeal to the knowingness in a knower.

We may say we know a thing, we are aware of it, we are conscious of it, we feel it, we sense it, etc.

Awareness, consciousness, feeling, sensation; all these words refer to that whereby we know what we know. It is significant and important that we cannot indicate what we mean by one of these words without appealing to that in us which corresponds with their significance, that is, to that in us which knows that it knows. From this fact may be shown the ultimate infiniteness of sentience.

All these words refer to that in and by which we know; if we persist in asking what we mean by this we can reply only, “We know what we mean. Consciousness is its own evidence. Selfevidence is the means whereby sentience knows itself.”

Knowledge is a now-moment balanced precariously upon a sword-edge between what has been and what will be.
Wisdom, however, is in eternity.
Knowledge becomes empty in the moment of its fullness.
Wisdom is a full void, an M and 0, a mother of all things.