Changes

Written between March 15 and April 4, 1915, and immediately published, [[Instincts ]] and Their Vicissitudes opens the "collection which I originally intended to publish in book [[form ]] under the title 'Preliminaries to a [[Metapsychology]].' . . . The [[intention ]] of the series is to clarify and carry deeper the [[theoretical ]] assumptions on which a [[psycho]]-[[analytic ]] [[system ]] could be founded" ([[Freud]], 1917d, p. 222 n.).

The previous year, 1914, Freud's introduction of [[narcissism ]] and of the ego as a libidinally cathected [[agency ]] altered the dynamics of...