“Morgenbesser described Gentile ethics as entailing “ought implies can” while in Jewish ethics “can implies don’t.””
The Times, Sidney Morgenbesser: Erudite and influential American linguistic philosopher with the analytical acuity of Spinoza and the blunt wit of Groucho Marx https://www.thetimes.co.uk/article/sidney-morgenbesser-5cz8gg8qfvm, September 8, 2004.
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Sidney Morgenbesser 16
American philosopher 1921–2004Related quotes

Infinite Ethics https://nickbostrom.com/ethics/infinite.pdf (2011)

Source: The Political Doctrine of Fascism (1925), p. 112

“Confusion of sapience with sentience can be ethically catastrophic.”
Social Media Unsorted Postings 2016 https://www.hedweb.com/social-media/2016.html
“Ethical judgments can be [should be] included in the scope of science”
Cited in: John P. van Gigch (2006) Wisdom, Knowledge, and Management. p. 2
1940s - 1950s, Theory of Experimental Inference (1948)

Attributed in posthumous publications, Einstein and Religion (1999)
Context: I have found no better expression than "religious" for confidence in the rational nature of reality as it is accessible to human reason. Wherever this feeling is absent, science degenerates into uninspired empiricism. … I cannot accept your opinion concerning science and ethics or the determination of aims. What we call science has the sole purpose of determining what is. The determining of what ought to be is unrelated to it and cannot be accomplished methodically. Science can only arrange ethical propositions logically and furnish the means for the realization of ethical aims, but the determination of aims is beyond its scope. At least that is the way I see it.
Letter to his friend Maurice Solovine (1 January 1951) p. 120