“Put simply, we must always remember that separate but equal is not equal.”
Regarding the proposal that homosexual couples be limited to civil unions, instead of being allowed to marry.
Office of the Prime Minister http://www.pm.gc.ca/eng/news.asp?id=421 (Feb 16, 2005)
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Paul Martin 6
21st Prime Minister of Canada 1938Related quotes

Writing for the court, Brown v. Board of Education, 347 U.S. 483 (1954)
1950s

Not special justice, not social justice, but equal justice. We are the inheritors and the protectors of the civil rights movement. They are perverting it. They're perverting it, and they're doing it intentionally. And they're selling us a line of global nonsense.
2010s, 2010

Speech to the United Parents Association, as quoted in The New York Times (6 April 1958)

Source: https://www.goodreads.com/author/quotes/14108295.alexis_karpouzos?page=2

Under Fire (1916), Ch. 24 - The Dawn
Context: Paradis, possessed by his notion, waved his hand towards the wide unspeakable landscape. and looking steadily on it repeated his sentence, 'War is that. It is that everywhere. What are we, we chaps, and what's all this here? Nothing at all. All we can see is only a speck. You've got to remember that this morning there's three thousand kilometers of equal evils, or nearly equal, or worse."
"And then," said the comrade at our side, whom we could not recognize even by his voice, "to-morrow it begins again. It began again the day before yesterday, and all the days before that!"

Address before the Indian Council of World Affairs, New Delhi, India, April 5, 1956, as quoted in Walter P Reuther: Selected Papers (1961), by Henry M. Christman, p. 131
1950s, Address before the Indian Council on World Affairs (1956)

“Equal wealth and equal opportunities of culture… have simply made us all members of one class.”
Source: Looking Backward, 2000-1887 http://www.gutenberg.org/dirs/etext96/lkbak10.txt (1888), Ch. 14.

From Created Equal, an episode of the PBS Free to Choose television series (1980, vol. 5 transcript) http://www.freetochoosemedia.org/broadcasts/freetochoose/detail_ftc1980_transcript.php?page=5.
Variant: The society that puts equality before freedom will end up with neither. The society that puts freedom before equality will end up with a great measure of both.