It Is One Thing To Show

From Book IV, Chapter 7 of An Essay Concerning Human Understanding (1690). John Locke is arguing against the use of syllogistic logic as a tool for persuasion: demonstrating that an argument is formally invalid (showing a man his error) does not automatically produce assent to the correct view. Truth must be arrived at by the person's own inquiry and evidence, not imposed by authority or argument. This epistemological humility informed his political case for religious toleration — no one can be argued or coerced into genuine belief.