"Feminism: An Agenda" (1983)
Letters from a War Zone: Writings 1976-1987
Quotes about parting
page 3

Remark made at Kremlin New Year's Eve reception, December 31, 1956. Quoted in Khrushchev by Edward Crankshaw. ISBN 9781448205059

Straight away, I said, "That's it – I'm going vegetarian".
"Oli Sykes joins animal rights campaign" https://web.archive.org/web/20131105210441/http://www.kerrang.com/blog/2008/10/oli_sykes_joins_animal_rights.html, interview with Kerrang! (30 October 2008).

Source: 1860s, Second State of the Union address (1862)

“Discretion is the better part of valor.”
Source: Requiem for a Dream

"The Quantum State of the Universe", Nuclear Physics (1984) <!-- B239, p. 258 -->
Context: Many people would claim that the boundary conditions are not part of physics but belong to metaphysics or religion. They would claim that nature had complete freedom to start the universe off any way it wanted. That may be so, but it could also have made it evolve in a completely arbitrary and random manner. Yet all the evidence is that it evolves in a regular way according to certain laws. It would therefore seem reasonable to suppose that there are also laws governing the boundary conditions.

“The whole is greater than the sum of its parts.”

Letter to Elisabeth Nietzsche, Bonn, 1865-06-11. Quoted in Walter Kaufmann, The Faith of a Heretic (opening epigram).
Variant: Here the ways of men divide. If you wish to strive for peace of soul and happiness, then believe; if you wish to be a disciple of truth, then inquire.
Source: Twilight of the Idols

“If a man loses his reverence for any part of life, he will lose his reverence for all of life.”

“It is part of a good man to do great and noble deeds, though he risk everything.”

“Conversations consist for the most part of things one does not say.”

Reported as an inscription quoting Lincoln in an English college in The Baptist Teacher for Sunday-school Workers : Vol. 36 (August 1905), p. 483. The portion beginning with "stand with anybody..." is from the 16 October 1854 Peoria speech..
Posthumous attributions

Source: Kulturphilosophie (1923), Vol. 2 : Civilization and Ethics, Chapter 26
Context: Just as the wave cannot exist for itself, but is ever a part of the heaving surface of the ocean, so must I never live my life for itself, but always in the experience which is going on around me. It is an uncomfortable doctrine which the true ethics whisper into my ear. You are happy, they say; therefore you are called upon to give much.

1850s, Speech at Peoria, Illinois (1854)

“the worst part about being lied to is knowing you werent worth the truth”
“The best part of beauty is that which no picture can express.”
Source: Betrayed

“If you don't turn your life into a story, you just become a part of someone else's story.”
Source: The Amazing Maurice and His Educated Rodents

“Each of us has a unique part to play in the healing of the world.”
The Law of Divine Compensation: On Work, Money, and Miracles (2012)
Source: The Law of Divine Compensation: Mastering the Metaphysics of Abundance

“You must save what you can of your life; you musn't lose it all simply because you've lost a part.”
Source: The Portrait of a Lady
“The bad part is life continues. The good part is that the pain goes away.”
Source: The Devil's Web
“I feel apart from everything and a part of everything.”
Source: Frozen Fire
Source: Masterpiece

“Divide each difficulty into as many parts as is feasible and necessary to resolve it.”
Source: Discourse on Method

“Intellect is a part of a good faith. Intellect is the light, the heart is the direction.”

“Parting is all we know of Heaven,
and all we need of Hell.”

Quote in his letter from Drenthe, The Netherlands, Oct. 1883, 'Van Gogh's Letters', http://webexhibits.org/vangogh/letter/13/336.htm
1880s, 1883

Variant : The thinking man must oppose all cruel customs no matter how deeply rooted in tradition and surrounded by a halo. When we have a choice, we must avoid bringing torment and injury into the life of another, even the lowliest creature; to do so is to renounce our manhood and shoulder a guilt which nothing justifies.
As quoted in Becoming Vegan : The Complete Guide to Adopting a Healthy Plant-based Diet (2000) by Brenda Davis and Vesanto Melina, p. 261
Source: The Spiritual Life (1947), p. 305; also in The Animal World of Albert Schweitzer (1950), p. 179

“Death is not the opposite of life but an innate part of it. By living our lives, we nurture death.”
Variant: Death is not the opposite of life, but a part of it.
Source: Norwegian Wood

“He was part of my dream, of course -- but then I was part of his dream, too.”

Variant: The worse part of holding the memories is not the pain. It's the loneliness of it. Memories need to be shared.
Source: The Giver

“Language is a part of our organism and no less complicated than it.”
Journal entry (14 May 1915), p. 48
1910s, Notebooks 1914-1916

Source: Through the Year with Jimmy Carter: 366 Daily Meditations from the 39th President

I.332 http://books.google.com/books?id=Nl-vaAdJD3MC&pg=PA139&dq=:%22Arrogance+on+the+part+of+the+meritorious+is+even+more+offensive+to+us%22&hl=en&ei=7HFTTKGJOcmhnQfSrsXJAw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCUQ6AEwAA#v=onepage&q=%3A%22Arrogance%20on%20the%20part%20of%20the%20meritorious%20is%20even%20more%20offensive%20to%20us%22&f=false
Human, All Too Human (1878)

“The better part of one's life consists of his friendships.”
Letter to Joseph Gillespie http://quod.lib.umich.edu/l/lincoln/lincoln2/1:88.1?rgn=div2;view=fulltext (13 July 1849)
1840s

1920s, Marriage and Morals (1929)

“A wise man can play the part of a clown, but a clown can't play the part of a wise man.”