"Religions that teach brotherly love have been used as an excuse for persecution, and our profoundest scientific insight is made into a means of mass destruction"
About this Quote
The second clause tightens the vise. “Our profoundest scientific insight” sounds like a hymn to human ingenuity, then becomes “a means of mass destruction.” Russell compresses the 20th century into one sentence: the prestige of science, the acceleration of technology, the betrayal of enlightenment optimism. Writing in the shadow of world wars and the nuclear age, he’s watching rationality lose its innocence. Knowledge expands, and so does the menu of ways to kill.
What makes the line work is its symmetry and its refusal to flatter the reader. Russell pairs religion and science not to “both-sides” them, but to show a common vulnerability: anything powerful enough to inspire collective devotion can be turned into an instrument of domination. The real target is human self-deception - the habit of calling our violence holy, or necessary, or progress. Russell’s warning is less “abandon faith” or “fear science” than: stop confusing noble slogans with noble outcomes, especially when institutions gain the power to punish at scale.
Quote Details
| Topic | Ethics & Morality |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Russell, Bertrand. (2026, January 18). Religions that teach brotherly love have been used as an excuse for persecution, and our profoundest scientific insight is made into a means of mass destruction. FixQuotes. https://fixquotes.com/quotes/religions-that-teach-brotherly-love-have-been-4939/
Chicago Style
Russell, Bertrand. "Religions that teach brotherly love have been used as an excuse for persecution, and our profoundest scientific insight is made into a means of mass destruction." FixQuotes. January 18, 2026. https://fixquotes.com/quotes/religions-that-teach-brotherly-love-have-been-4939/.
MLA Style (9th ed.)
"Religions that teach brotherly love have been used as an excuse for persecution, and our profoundest scientific insight is made into a means of mass destruction." FixQuotes, 18 Jan. 2026, https://fixquotes.com/quotes/religions-that-teach-brotherly-love-have-been-4939/. Accessed 16 Feb. 2026.






