Persecution always says, 'I know the consequences of your opinion better than you know them yourselves.' But the language of toleration was always amicable, liberal, and just: it confessed its doubts, and acknowledged its ignorance … Persecution had always reasoned from cause to effect, from opinion to action, [that such an opinion would invariably lead to but one action], which proved generally erroneous; while toleration led us invariably to form just conclusions, by judging from actions and not from opinions.

Speech in the House of Commons (2 March 1790), quoted in Loren Reid, Charles James Fox: A Man for the People (1969), p. 261.