Source: Demon in My View
Quotes about the night
page 7

This passage contains some phrases King later used in "Where Do We Go From Here?" (1967) which has a section below.
1950s, Loving Your Enemies (Christmas 1957)
Variant: Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars. Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate, only love can do that.
Source: Mentioned in "Out of Osama's Death, a Fake Quotation Is Born" by Megan McArdle, The Atlantic (May 2011) http://www.theatlantic.com/national/archive/2011/05/out-of-osamas-death-a-fake-quotation-is-born/238220/, and widely distributed on twitter http://twitter.com/#!/jmadly/status/65314784136011776 as a quote of King, after the death of Osama bin Laden, the first sentence is one written by Jessica Dovey http://i.imgur.com/cqtjw.jpg on her Facebook page, which became improperly combined by others with genuine statements of King, whom she quoted, and which occur in Strength to Love (1963), Ch. 5 : Loving your enemies, and in Where Do We Go from Here : Chaos or Community? (1967), p. 62.
For the full story see "Anatomy of a Fake Quotation" by Megan McArdle, The Atlantic (May 3, 2011) http://www.theatlantic.com/national/archive/2011/05/anatomy-of-a-fake-quotation/238257/ and for the Facebook version of the quote see Did Martin Luther King, Jr. say that “I will not rejoice in the death of one, not even an enemy”? at skeptics.stackexchange.com http://skeptics.stackexchange.com.
Context: Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars. Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate; only love can do that. Hate multiplies hate, violence multiplies violence, and toughness multiplies toughness in a descending spiral of destruction.
Context: Let us move now from the practical how to the theoretical why: Why should we love our enemies? The first reason is fairly obvious. Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars. Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate; only love can do that. Hate multiplies hate, violence multiplies violence, and toughness multiplies toughness in a descending spiral of destruction. So when Jesus says "love your enemies," he is setting forth a profound and ultimately inescapable admonition. Have we not come to such an impasse in the modern world that we must love our enemies-or else? The chain reaction of evil-Hate begetting hate, wars producing more wars-must be broken, or we shall be plunged into the dark abyss of annihilation.
Context: I mourn the loss of thousands of precious lives, but I will not rejoice in the death of one, not even an enemy. Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars. Darkness cannot drive out darkness: only light can do that. Hate cannot drive out hate: only love can do that.

“No trouble ever got fixed late at night," he said. "Midnight is for regrets.”
Source: Red Glove

The Ladder of St. Augustine, st. 10.
Source: Good Poems for Hard Times

“I am the blue-lidded daughter of Sunset; I am the naked brilliance of the voluptuous night-sky.”
Source: The Book of the Law (1904)

“But just suddenly I really, really needed to see you again right that minute, that night.”
Source: Why We Broke Up

“The streets were dark with something more then night.”

Source: Entweder / Oder

“If the stars should appear but one night every thousand years how man would marvel and adore.”
Source: 1830s, Nature http://www.emersoncentral.com/nature.htm (1836), Ch. 1, Nature
Context: If the stars should appear one night in a thousand years, how would men believe and adore, and preserve for many generations the remembrance of the city of God which had been shown!
Context: If the stars should appear one night in a thousand years, how would men believe and adore, and preserve for many generations the remembrance of the city of God which had been shown! But every night come out these envoys of beauty, and light the universe with their admonishing smile.
Source: This Child's Gonna Live

“Whither goest thou, America, in thy shiny car in the night?”
Part Two, Ch. 3
On the Road (1957)

“Work every day. No matter what has happened the day or night before, get up and bite on the nail.”

" Once by the Pacific http://www.poemhunter.com/poem/once-by-the-pacific-2/" (1928)
General sources
Context: You could not tell, and yet it looked as if
The shore was lucky in being backed by cliff,
The cliff in being backed by continent;
It looked as if a night of dark intent
Was coming, and not only a night, an age.
Someone had better be prepared for rage.
There would be more than ocean-water broken
Before God's last Put out the Light was spoken.

“There is no stillness like the quiet of the first cold nights in the fall.”
Source: The Ballad of the Sad Café and Other Stories

“I like it where it gets dark at night, and if you want noise, you have to make it yourself.”
Source: Fuzzies and Other People

“The night is the hardest time to be alive and 4am knows all my secrets.”

“Got tight on absinthe last night. Did knife tricks.”
Source: Almost Like Being in Love

“I know what to do with my life. I just don't know what to do with this one night.”
Source: Then We Came to the End

“I do this so you cannot help but hear. A wise man views a moonless night with fear.”
Source: The Wise Man's Fear

“My luck is getting worse and worse. Last night, for instance, I was mugged by a Quaker.”

“On bisexuality: It immediately doubles your chances for a date on Saturday night.”
The earliest source located is here http://books.google.com/books?id=kd41AQAAIAAJ&q=bisexuality#search_anchor, in the sidebar "Quotations According to Woody Allen" http://books.google.com/books?id=kd41AQAAIAAJ&q=%22quotations+according%22#search_anchor which appeared alongside the New York Times article "Everything You Wanted to Know About Woody Allen at 40" by Mel Gussow, 1 December 1975, page 33. Full text also available in Lakeland Ledger, 25 December 1975 http://news.google.com/newspapers?id=pUdNAAAAIBAJ&sjid=4foDAAAAIBAJ&pg=6578%2C6650273 on google news.
Unsourced variant: "Bisexuality immediately doubles your chances for a date on Saturday night."

“I like the dreams of the future better than the history of the past, — so good night!”
Letter to John Adams (1 August 1816)
1810s