"her whose beauteous eyes all things behold, From her thou'lt know the journey of thy life"

(Canto 10, lines 131-132)

Referring to Beatrice. Note, however, that it is not Beatrice who tells Dante "the journey of his life", but his forefather Cacciaguida (in Paradiso Canto 17). It might be that Dante simply changed his mind during the composition of the poem.