Lecture I

The manner in which one is accustomed to talk in social life when conversing with other people, that one will not find fitting to use when delivering a lecture in public, or generally speaking, to an audience. At most, one will be able to insert sentences such as one speaks in ordinary life only now and then. It is well to be aware that what one has as formulation of one's speaking in ordinary life, is, as a rule, somewhat too subtle or too blunt for a lecture to an audience. It just does not set quite right. The way in which one formulates one's words in the usual speaking, when addressing another person, varies; it always swings between being somewhat crude and, on the other hand, somewhat untruthful or impolite. Both must be entirely avoided in a lecture delivered to an audience, and, if used, then only in parenthesis, so to speak. Otherwise the listener has the secret feeling: while the lecturer begins to speak as one does in a lecture, suddenly he starts declaiming, or speaking dialoguewise,—he must intend either to offend us a bit or to flatter us.