One of the strongest objections came from William James’s brother-in-law, William Mackintire Salter, himself a prolific writer and speaker on ethics, as well as an early follower of Felix Adler, the German-Jewish founder of the Ethical Culture movement, and the leader of the Society for Ethical Culture of Chicago. Salter, once an aspiring Congregational minister who rejected Christian orthodoxy and turned to Unitarianism before his faith in the “solid grounds for distinctive Christian faith” fully gave way, discovered in Nietzsche a fellow antifoundationalist ethicist who took a higher
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