I had been listening to and reading A Course in Miracles (Text), when I came across this quote:
"The ego is incapable of knowing how you feel. When I said that the ego does not know anything, I said the one thing about the ego that is wholly true. But there is a corollary; if only knowledge has being and the ego has no knowledge, then the ego as no being." (Text 8-VIII.7)
This reminded me of the use (in some circles) whereby the word 'knowledge' is interpreted as 'knowing' or the act of knowing (i.e. being aware) only, rather than in the usual sense of amassing intellectual data/facts/thoughts etc.
In this sense, 'knowledge' or 'knowing only' equates exactly with being, since both as also synonyms for just awareness or consciousness.
Hence, a thought construct, including the primal thought-construct-tendency which is the 'ego' ('I-thought'), cannot actually know anything, in the sense that it is not self-aware or endowed with any form of awareness itself-- but rather lives only as a construct existing in our awareness. The ego doesn't assert itself in deep sleep (or death) for instance, and at times when our waking consciousness seems to be in abeyance.
Being without awareness (knowledge) and being just a thought-construct, the ego thus has no being itself, and is rather just like a computer program- playing out its programming as it was created to do, relying on power beyond itself, and mostly for the sake of the body and its own survival.
This leads to the inquiry of what one really is, if the ego ("I-construct) and the body have no inherent being in themselves.. and taking into account that we normally regard ourselves as a body-mind entity.
Without jumping into further concepts, such as 'we are soul, spirit, Otherness' etc.. it is possible to stop and enquire directly into the nature of what we are in this moment, with the understanding that we are prior to the awareness of ourselves as a body, and prior to the awareness of ourselves as an ego. One means for doing this is via the practiced habit of self-attentiveness and patient observation directed squarely at one's "self" (or the feeling of one's "self").