“How wonderful is Death,
Death and his brother Sleep!”
Canto I
Queen Mab (1813)
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Percy Bysshe Shelley 246
English Romantic poet 1792–1822Related quotes

“Death's own brother Sleep.”
Consanguineus Leti Sopor.
Source: Aeneid (29–19 BC), Book VI, Line 278 (tr. Fairclough)

“Night, having Sleep, the brother of Death.”
Source: The Theogony (c. 700 BC), line 754.

[Robert Fisk: Freedom, democracy and human rights in Syria, Robert Fisk, THE INDEPENDENT, 16 September 2010, http://www.independent.co.uk/opinion/commentators/fisk/robert-fisk-freedom-democracy-and-human-rights-in-syria-2080463.html]
A Better Hope for the Soul, The Watchtower magazine, 8/1 1996.

“Sleep. Those little slices of death. How I loathe them.”
Various forms of this quote are attributed to Poe, primarily by a title card in the movie A Nightmare on Elm Street 3, though there is no record of his having ever said it.
Misattributed

“Sleep those tiny slices of death how i despise them”