"But when we are asleep, the same Phantasms and Imaginations are more strong, vivid and lively; because the Nerves are relaxated, there are often no Motions transmitted by them from the outward Objects into the Brain, to confound those Motions of the Spirits within, and distract the Soul's Attention to them; Just as the same Loudness of a Voice in a still Evening will be heard a great deal further and clearer, than in the Day-time when the Air is agitated with many contrary Motions crossing and confounding one another. But now there are no other Motions of the Spirits, besides these which cause Dreams to compare with them; and disgrace them, or put them out of Countenance; and as it were, by their louder Noise and Clamours, so to possess the Animadversive part of the Soul, that the weaker Murmurs of the other cannot obtain to be heard, as it is when we are awake, or in the Day-time."
— Cudworth, Ralph (1617-1688)
(III.iv.4, pp. 115-117)