David Hume – Liberty of thinking fatal to priestly power Share this quote: Liberty of thinking, and of expressing our thoughts, is always fatal to priestly power, and to those pious frauds on which it is commonly founded. – David Hume (1711-1776) Is this quotation insightful, though-provoking, useful? Click on a star to rate it! Submit Rating Average rating 0 / 5. Vote count: 0