Andrej's mind, like any sane human's … was a constantly convulsing dialectical unity of consciousness and subconsciousness, the battening down and channelling of dreams and desires, the recurring re-creation of the subliminal by the contradictory, the rational-capricious ego. And vice versa. The interaction of levels of consciousness into an unstable and permanently self-renewing whole.

p. 553 - Perdido Street Station (2000)