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They had applied their doubts to the very head that had introduced doubt as a tool for advancing knowledge. And in the end they gave the head a nod.

Russell Shorto (2008). “Descartes' Bones: A Skeletal History of the Conflict between Faith and Reason”, p.107, Vintage
They had applied their doubts to the very head that had introduced doubt as a tool for advancing knowledge. And in the end they gave the head a nod.