"Even immediately after profound meditation, the mind being fatigued, indulges itself in roving, although the will oppose; we indeed continue to think, but our thoughts are altogether irregular; we remain awake, but experience the effects of sleep; imagination traces the same airy semblances, the same fugitive shades as during sleep."
— Marat, Jean-Paul (1743-1793)
A Philosophical Essay on Man: Being an Attempt to Investigate the Principles and Laws of the Reciprocal Influence of the Soul on the Body, 2 vols. (London: Printed for J. Ridley; and T. Payne, 1773) <Link to Vol. II in ECCO_TCP>