Muchos hombres están locos en ciertos casos, y pasan por la vida sin percibirlo. Por ejemplo, se ha apoderado de una persona la locura de suponerse obligada literalmente a rezar continuamente; si la locura se hubiera vuelto en sentido contrario, y la persona pensara que rezar nunca es un crimen, no es improbable que hubiera continuado sin ser observada.
James Boswell, Samuel Johnson, Edmond Malone (1824). "La vida de Samuel Johnson, LL. D., Comprehending an Account of His Studies, and Numerous Works, in Chronological Order: A Series of His Epistolary Correspondence and Conversations with Many Eminent Persons; and Various Original Pieces of His Composition, Never Before Published; the Whole Exhibiting a View of Literature and Literary Men in Great Britain, for Near Half a Century During which He Flourished", p.28.