All is Unknown
At any moment, we know nothing beyond what we are conscious of now, gone the next moment once our focus shifts to something else, and what we think of as knowledge is made up of so many pieces that we cannot hold it all in our consciousness in the same moment. When we observe our consciousness for what it is in the one moment during which it exists, it appears that everything is unknown to us, even ourselves. Thus at all times we should observe all as if we had never known it before, for if anything, it was not we that knew it, but someone we once were but no longer know, a stranger. When we observe our consciousness in the moment, we know that we know nothing. We have to rely on a mind of which we do not know where it will lead us, thus we need to accept mystery to do anything at all.