A work in progress for the first in a series of book cover redesigns for books by my favourite Nonduality teachers.
In "the transparency of things" the symbol represents consciousness and the two panels that flow into each other represent the easily overlooked unity of the two fundamental ingredients that exist in the paradigm of Duality, the knower and the known.
The line represents the primary experience of the entity of consciousness, to know and thus experience itself, referred to as the "knower". That which is experienced, being the "known."
In this book Spira explores their unity in the paradigm of Nonduality.