sleep

Conventional: A state of unawareness and forgetfulness in which the mind withdraws from “reality” into a private state and dreams of senseless things that are not real.

ACIM: A state of unawareness and forgetfulness in which the mind elects to withdraw from true reality into a private state of insanity, where it dreams of being in another place (besides Heaven), another time (besides eternity) and even of being another person (besides the Son of God). This state is not truly real, however, for, “God creates only mind awake” (see CE W-167.8:1).