Full Idea
My programme: do away with punishment: for us. Counter-retribution is nonsense. (If something is evil, then whoever performs the counter-retribution is certainly committing the same evil).
Gist of Idea
Do away with punishment. Counter-retribution is as bad as the crime
Source
Friedrich Nietzsche (Unpublished Notebooks 1882-84 [1883], 16[17])
Book Reference
Nietzsche,Friedrich: 'Fragments from the period of 'Zarathustra' (v 14)', ed/tr. Loeb/Tinsley [Stanford 2019], p.455
A Reaction
Note that he seems to have a perfectly orthodox concept of 'evil' here. I don't think he ever suggested a strategy to replace punishment.