The fatal tendency of mankind to leave off thinking about a thing when it is no longer doubtful, is the cause of half their errors.

More information about this quote

Authentication Score 3

Original Citation

Mill, John Stuart. On Liberty. London: J.W. Parker and Son, 1859, ch. 2.

Current Citation

Mill, John Stuart. "On Liberty." On Liberty, Utilitarianism and Other Essays, edited by Mark Philp and Frederick Rosen. Oxford University Press, 2015, ch. 2.