Full Idea
A consciousness can conceive of no other consciousness than itself.
Gist of Idea
A consciousness can conceive of no other consciousness than itself
Source
Jean-Paul Sartre (Transcendence of the Ego [1937], Conc (1))
Book Reference
Sartre,Jean-Paul: 'The Transcendence of the Ego' [Routledge 2004], p.45
A Reaction
This is why we don't know what it is like to be a bat. This seems right, though it looks like a contingent truth, and yet Sartre seems to offer it as a necessary truth. Can God conceive of my consciousness?