“Life is a nightmare that prevents one from sleeping.”

Cf. Anatole France, Le Lys Rouge [The Red Lily] (1894), ch. 7: La majestueuse égalité des lois, qui interdit au riche comme au pauvre de coucher sous les ponts, de mendier dans les rues et de voler du pain. (The law, in its majestic equality, forbids the rich as well as the poor to sleep under bridges, to beg in the streets, and to steal bread.)
Source: Farthing (2006), Chapter 18

Variant: I didn't want to wake up. I was having a much better time asleep. And that's really sad. It was almost like a reverse nightmare, like when you wake up from a nightmare you're so relieved. I woke up into a nightmare.
Source: It's Kind of a Funny Story

"The Lees of Happiness"
Quoted, Tales of the Jazz Age (1922)

Source: It's Kind of a Funny Story

This quote is from "Pink" by "Rymin" and the original words are in Persian.
Source: https://soundcloud.com/rymiin/pink

"The Death of the Ball Turret Gunner" http://www.cs.rice.edu/~ssiyer/minstrels/poems/707.html, complete poem
Little Friend, Little Friend (1945)

From 'Om man så må sige – 350 Dronning Margrethe-citater', quoted in English here http://trondni.blogspot.co.uk/2012/11/new-books-wit-and-wisdom-of-margrethe-ii.html.
Personal

Source: Wooden: A Lifetime of Observations and Reflections On and Off the Court

Comparing Petr Cech's nasty injury with Joey Barton's bottom-baring antics.
http://news.bbc.co.uk/sport2/hi/funny_old_game/7004282.stm
Chelsea FC