In Paris during the summer of 1814, two lovers, Percy Bysshe Shelley and Mary Wollstonecraft Godwin, began a chronicle of their life together, starting with an account of the day they eloped to France. These journals--kept during the early years by both of them and then, after their marriage, mostly by Mary alone--are an essential source of information about the lives, both individually and together, of two major British literary figures. This critical edition, the first to be faithful to the manuscript, presents the full text of all surviving journal entries and provides extensive biographical commentary drawn from unpublished as well as published sources.