“There is also need for leadership and concern on the part of white people of good will in the North, if this problem is to be solved. Genuine liberalism on the question of race. And what we too often find in the North is a sort of quasi-liberalism based on the principle of looking objectively at all sides, and it is a liberalism that gets so involved in looking at all sides, that it doesn’t get committed to either side. It is a liberalism that is so objectively analytical that it fails to get subjectively committed. It is a liberalism that is neither hot nor cold but lukewarm. And we must come to see that his problem in the United States is not a sectional problem, but a national problem. No section of our country can boast of clean hands in the area of brotherhood. It is one thing for a white person of good will in the North to rise up with righteous indignation when a bus is burned in Anniston, Alabama, with freedom riders, or when a nasty mob assembles around a University of Mississippi, and even goes to the point of killing and injuring people to keep one Negro out of the university, or when a Negro is lynched or churches burned in the South; but that same person of good will must rise up with the same righteous indignation when a Negro in his state or in his city cannot live in a particular neighborhood because of the color of his skin, or cannot join a particular academic society or fraternal order or sorority because of the color of his or her skin, or cannot get a particular job in a particular firm because her happens to be a Negro. In other words, a genuine liberalism will see that the problem can exist even in one’s front and back yard, and injustice anywhere is a threat to justice everywhere.”

An earlier unattributed version of this quip appeared in What Man Can Make of Man (1942) by William Ernest Hocking: "He lends himself to the gibe that he is 'so very liberal, that he cannot bring himself to take his own side in a quarrel.'" http://www.barrypopik.com/index.php/new_york_city/entry/a_liberal_is_a_man_too_broad_minded_to_take_his_own_side_in_a_quarrel/
Source: As quoted by Guy Davenport (The Geography of the Imagination) at page x in A Liberal Education http://books.google.de/books?id=Dly0RgUc0YcC&pg=PR10&dq=A+liberal+is+a+man+too+broadminded+to+take+his+own+side+in+a+quarrel.&hl=de&sa=X&ei=Xt_OUZSGJcjLswaApYDQBg&redir_esc=y#v=onepage&q=A%20liberal%20is%20a%20man%20too%20broadminded%20to%20take%20his%20own%20side%20in%20a%20quarrel.&f=false by Abbott Gleason (Cambridge, Massachusetts, USA, Tide Pool Press, 2010).
Source: As quoted by Harvey Shapiro “Story of the Poem”, 15 January 1961, New York (NY) Times, Section SM page 6 https://www.nytimes.com/1961/01/15/archives/story-of-the-poem-the-story-of-the-poem.html?searchResultPosition=1

Conversations with Derek Walcott (University Press Mississippi, 1996, page.165)

Speech in Swansea (1 October 1908), quoted in Better Times: Speeches by the Right Hon. D. Lloyd George, M.P., Chancellor of the Exchequer (London: Hodder & Stoughton, 1910), p. 51.
Chancellor of the Exchequer

Combat Liberalism (1937)
Original: (zh-CN) 自由主义者以抽象的教条看待马克思主义的原则。他们赞成马克思主义，但是不准备实行之，或不准备完全实行之，不准备拿马克思主义代替自己的自由主义。这些人，马克思主义是有的，自由主义也是有的：说的是马克思主义，行的是自由主义；对人是马克思主义，对己是自由主义。两样货色齐备，各有各的用处。这是一部分人的思想方法。

2010s, Trends in South Korea’s Nationalist-Left Discourse (June 2018)
Context: Moon camp: You can talk as loudly as you want, and the Americans won’t pay the slightest attention. Least of all Trump. As far as they’re concerned, the North Koreans are communists, and you’re liberal democrats.

2003, Treason : Liberal Treachery from the Cold War to the War on Terrorism (2003)

Google It: Total Information Awareness, 2016
Variant: Too many people prefer to stay inside their own comfort zones with a one-sided liberal or conservative sentiment.

especially political things
Page 5.
New Age Politics: Healing Self and Society (1978)