The Knower (n.) does not know both things and himself; the whole field "I-know-this" knows itself.
Definition.com
Definition.com
Knower (n.) can know other things but never make himself its object, as fire burns other things but cannot burn itself.
Definition.com
Knower (n.) is demanded by grammar, not by experience: "a light flashed" is easier to see through, since the flashing simply is the light.
Definition.com
Knower (n.) confronting the world and the word standing apart from events are twin illusions that stand or fall together.
Definition.com
Knower (n.) is a grammatical convention, not a fact: raining needs no rainer and clouding no clouder, so why should knowing need someone who knows?