When to soft Sleep we give ourselves away,
And in a dream as in a fairy bark
Drift on and on through the enchanted dark
To purple daybreak–little thought we pay
To that sweet bitter world we know by day. – Thomas Bailey Aldrich

Oh Sleep! it is a gentle thing, beloved from pole to pole, to Mary Queen the praise be given! She sent the gentle sleep from Heaven, that slid into my soul. – Samuel Taylor Coleridge

Sleep is an eight-hour peep show of infantile erotica. – J. G. Ballard