“I believe that certain inequalities that cannot be forbidden in the name of socialist equality of opportunity should nevertheless be forbidden, in the name of community. But is it an injustice to forbid the transactions that generate those inequalities? Do the relevant prohibitions merely define the terms within which justice will operate, or do they sometimes (justifiably?) contradict justice? I do not know the answer to that question.”

The God-Seeker (1949), Ch. 57

Source: Politics, III. V. 8., https://www.loebclassics.com/view/aristotle-politics/1932/pb_LCL264.211.xml

1960s, Memorial Day speech (1963)
Context: The law cannot save those who deny it but neither can the law serve any who do not use it. The history of injustice and inequality is a history of disuse of the law. Law has not failed — and is not failing. We as a nation have failed ourselves by not trusting the law and by not using the law to gain sooner the ends of justice which law alone serves. If the white over-estimates what he has done for the Negro without the law, the Negro may under-estimate what he is doing and can do for himself with the law.

Dune Genesis (1980)
Context: In the beginning I was just as ready as anyone to fall into step, to seek out the guilty and to punish the sinners, even to become a leader. Nothing, I felt, would give me more gratification than riding the steed of yellow journalism into crusade, doing the book that would right the old wrongs.
Reevaluation raised haunting questions. I now believe that evolution, or deevolution, never ends short of death, that no society has ever achieved an absolute pinnacle, that all humans are not created equal. In fact, I believe attempts to create some abstract equalization create a morass of injustices that rebound on the equalizers. Equal justice and equal opportunity are ideals we should seek, but we should recognize that humans administer the ideals and that humans do not have equal ability.

Expeditions of an Untimely Man, §48 Progress in my sense (Streifzüge eines Unzeitgemässen §48 Fortschritt in meinem Sinne). Chapter title also translated as: Skirmishes of an Untimely Man, Kaufmann/Hollingdale translation, and Raids of an Untimely Man, Richard Polt translation
Twilight of the Idols (1888)
Original: (de) Die Lehre von der Gleichheit! ... Aber es giebt gar kein giftigeres Gift: denn sie scheint von der Gerechtigkeit selbst gepredigt, während sie das Ende der Gerechtigkeit ist... "Den Gleichen Gleiches, den Ungleichen Ungleiches - das wäre die wahre Rede der Gerechtigkeit: und, was daraus folgt, Ungleiches niemals gleich machen."

The Coming War over Genes: Darwin's Enemies on the Left http://www.isteve.com/Darwin-EnemiesonLeft.htm, by Steve Sailer, National Post, December 1, 1999

"Equality: the Unknown Ideal" (2001)

The Economic Tendency of Freethought (1890)
Context: First, then, God, being all-just, wishes to do justice; being all-wise, knows what justice is; being all-powerful, can do justice. Why then injustice? Either your God can do justice and won't or doesn't know what justice is, or he cannot do it. The immediate reply is: "What appears to be injustice in our eyes, in the sight of omniscience may be justice. God's ways are not our ways."
Oh, but if he is the all-wise pattern, they should be; what is good enough for God ought to be good enough for man; but what is too mean for man won't do in a God.