Full Idea
The immediate consciousness of myself is the condition of all other consciousness; and I know a thing only in so far as I know that I know it; no element can enter into the latter cognition which is not contained in the former.
Gist of Idea
Self-consciousness is the basis of knowledge, and knowing something is knowing myself
Source
Johann Fichte (The Vocation of Man [1800], p.37), quoted by A.W. Moore - The Evolution of Modern Metaphysics 06.2
Book Reference
Moore,A.W.: 'The Evolution of Modern Metaphysics' [CUP 2013], p.150
A Reaction
This strikes me as false, and a lot of intellectual contortion would be needed to believe it. Is knowing this pen is in front of me a case of knowing that I have knowledge of this pen, or is it just knowledge of this pen? [cf Kant 1781:A129]