The danger of knowledge
Learn from me, if not by my precepts, at least by my example, how dangerous is the acquirement of knowledge, and how much happier that man is who believes his native town to be the world, than he who aspires to become greater than his nature will allow.
Context: Victor warns the ambitious explorer Walton as he begins telling his story.
Not in a duel yet
Source: Vol. I, Chapter III (1818 text)