Man is not permitted without censure to follow his own thoughts in the search of truth, when they lead him ever so little out of the common road.
John Locke (1825). “An Essay Concerning Human Understanding: An analysis of Mr. Locke's Doctrine of ideas .... A defense of Mr. Locke's Opinion concerning personal identity .... A treatise on the conduct of the understanding. Some thoughts concerning reading and study for a gentleman. Elements of natural philosophy. A new method of a common place book. Extracted from the author's works. With a life of the author”, p.33