La Vita Nuova
From Memory Alpha, the free Star Trek reference
La Vita Nuova ("The New Life") is a book of verse written around 1293 by Dante. It is the story of his love for Beatrice Portinari, who also figured prominently in his Divine Comedy.
Kathryn Janeway was reading a translation of that book in 2375 while helping the Doctor cope with an ethical conflict. (VOY: "Latent Image")
[edit] Background
The quotation that the Doctor reads at the end of "Latent Image" must have been from a "reimagining" of La Vita Nuova. The Doctor reads: "In that book which is my memory, on the first page of the chapter that is the day when I first met you, appear the words, 'Here begins a new life'." The original Italian is more literally translated as: "In that part of the book of my memory before which is little that can be read, there is a rubric, saying, 'Incipit Vita Nova'." (D.G. Rossetti translation, 1861) Possibly because the Voyager version is somewhat more touching as a stand-alone quote, various websites and even books (see page 1) have erroneously attributed The Doctor's quote to Dante himself.
