“I love sleep because it is both pleasant and safe to use. Pleasant because one is in the best possible company and safe because sleep is the consummate protection against the unseemliness that is the invariable consequence of being awake. What you don't know won't hurt you. Sleep is death without the responsibility.”

Source: The Hunger Angel (2012), p. 26

Source: The Marriage Plot

Encounter the Enlightened (2001)
Context: There is something else which needs to be looked at beyond the dimension of the body and mind. If that dimension is not experienced, once you have come in the human form, if you do not experience yourself beyond the limitations of this body and mind, I would say this human form has been wasted upon you. Because to eat, sleep, reproduce and die one day, you don't need this kind of a body, you don't need this kind of intelligence.

Source: Gowda upset over seeing his sleeping photo http://timesofindia.indiatimes.com/city/bangalore/Gowda-upset-over-seeing-his-sleeping-photo/articleshow/97258.cms, The Times of India, 27 July 2003

No source in Hemingway's works has been found. May have originated in a 2000 post to the Usenet group alt.support.depression. link https://groups.google.com/forum/#!original/alt.support.depression/wYH4aCNHyp4/_d50yuXTeHsJ
Disputed

Monday Morning Podcast

Source: God-Shaped Hole