„Those who do not move, do not notice their chains.“

As is often the case, this quote appears to be something Luxemburg could have said or written, but searches for a source have been unsuccessful. While Luxemburg often used metaphors of breaking or shattering chains, this, apparently, is not one of them. See: https://librarianshipwreck.wordpress.com/2013/07/06/reference-desk-unanswered-questions/

Rosa Luxemburg photo
Rosa Luxemburg47
Polish Marxist theorist, socialist philosopher, and revolut… 1871 - 1919

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Dante Alighieri photo

„Time moves and yet we do not notice it.“

—  Dante Alighieri, book Purgatorio

Canto IV, line 9 (tr. Mandelbaum).
The Divine Comedy (c. 1308–1321), Purgatorio

Leo Tolstoy photo
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Charles Bukowski photo

„Those who preach god, need god
Those who preach peace do not have peace
Those who preach love do not have love“

—  Charles Bukowski American writer 1920 - 1994

Source: The Roominghouse Madrigals: Early Selected Poems, 1946-1966

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Aristotle photo

„Those who know, do. Those that understand, teach.“

—  Aristotle Classical Greek philosopher, student of Plato and founder of Western philosophy -384 - -321 BC

This and many similar quotes with the same general meaning are misattributed to Aristotle as a result of Twitter attribution decay. The original source of the quote remains anonymous. The oldest reference resides in the works of George Bernard Shaw, Man and Superman (1903): "Maxims for Revolutionists", where he claims that “He who can, does. He who cannot, teaches.”. However, the related quote, "Those who can, do. Those who understand, teach" likely originates from Lee Shulman in his explanation of Aristotlean views on professional mastery: Source: Shulman, L. S. (1986). Those who understand: Knowledge growth in teaching. Educational Researcher, 15(2), 4 - 14. Stable URL: http://www.jstor.org/stable/1175860
Misattributed
Variant: Those who can, do, those who cannot, teach.

H.L. Mencken photo

„Those who can -- do. Those who can't -- teach.“

—  H.L. Mencken American journalist and writer 1880 - 1956

Thomas Jefferson photo

„Those who hammer their guns into plows will plow for those who do not.“

—  Thomas Jefferson 3rd President of the United States of America 1743 - 1826

According to the Jefferson Library, this is misattributed to Jefferson http://wiki.monticello.org/mediawiki/index.php/Those_who_hammer_their_guns_into_plows.
Misattributed

Booker T. Washington photo

„Those who are happiest are those who do the most for others.“

—  Booker T. Washington, book Up from Slavery

Variant: The happiest people are those who do the most for others. The most miserable are those who do the least.
Source: Up from Slavery

Cyrus Hermann Kotzschmar Curtis photo

„There are two kinds of men who never amount to much: those who cannot do what they are told and those who can do nothing else.“

—  Cyrus Hermann Kotzschmar Curtis American publisher 1850 - 1933

Quoted in "The Best Liberal Quotes Ever: Why the Left is Right" - Page 39 - by William P. Martin - Reference - 2004

E.M. Forster photo

„Have you ever noticed that there are people who do things which are most indelicate, and yet at the same time - beautiful?“

—  E.M. Forster, book A Room with a View

Variant: No, he is not tactful, yet have you ever noticed that there are people who do things which are most indelicate, and yet, at the same time, beautiful?
Source: A Room with a View

„Those who do not have imaginary conversations do not love.“

—  Josephine Hart Irish writer 1942 - 2011

Source: The Stillest Day

Daniel Goleman photo
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Leonardo Da Vinci photo

„Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Etiam egestas wisi a erat. Morbi imperdiet, mauris ac auctor dictum.“