Angela Anaïs Juana Antolina Rosa Edelmira Nin y Culmell was a French-born American diarist, essayist, novelist, and writer of short stories and erotica. Born to Cuban parents in France, Nin was the daughter of the composer Joaquín Nin and the classically trained singer Rosa Culmell. Nin spent her early years in Spain and Cuba, about sixteen years in Paris (1924–1940), and the remaining half of her life in the United States, where she became an established author.

A diary is a written or audiovisual memorabilic record, with discrete entries arranged by date reporting on what has happened over the course of a day or other period. Diaries have traditionally been handwritten but are now also often digital. A personal diary may include a person's experiences, thoughts, and/or feelings, excluding comments on current events outside the writer's direct experience. Someone who keeps a diary is known as a diarist. Diaries undertaken for institutional purposes play a role in many aspects of human civilization, including government records, business ledgers, and military records. In British English, the word may also denote a preprinted journal format.