[In this introduction to his translation of the poem, Rossetti argues that the Vita Nuova laid the foundation for some of the most salient features of the Divina Commedia.]

The Vita Nuova (the Autobiography or Autopsychology of Dante's youth till about his twenty-seventh year) is already well known to many in the original, or by means of essays and of English versions partial or entire. It is, therefore, and on all accounts, unnecessary to say much more of the work here than it says for itself. Wedded to its exquisite and intimate beauties are personal peculiarities which excite wonder and conjecture, best replied to in the words which Beatrice herself is made to utter in the Commedia: "Questi fiu tal nella sue vita nuova." Thus then young Dante was. All that seemed possible to be done here for the work was to translate it in as free and clear a form as was consistent with fidelity to its meaning; to ease it, as far as possible, from notes and encumbrances; and to accompany it for the first time with those poems from Dante's own lyrical series which have reference to its events, as well as with such native commentary (so to speak) as might be afforded by the writings of those with whom its author was at that time in familiar intercourse …

It may be noted here, however, how necessary a knowledge of the Vita Nuova is to the full comprehension of the part borne by Beatrice in the Commedia. Moreover, it is only from the perusal of its earliest and then undivulged self-communings that we can divine the whole bitterness of wrong to such a soul as Dante's, its poignant sense of abandonment, or its deep and jealous refuge in memory. Above all, it is here that we find the first manifestations of that wisdom of obedience, that natural breath of duty, which afterwards, in the Commedia, lifted up a mighty voice for warning and testimony. Throughout the Vita Nuova there is a strain like the first falling murmur which reaches the ear in some remote meadow, and prepares us to look upon the sea.

Boccaccio, in his Life of Dante, tells us that the great poet, in later life, was ashamed of this work of his youth. Such a statement hardly seems reconcilable with the allusions to it made or implied in the Commedia; but it is true that the Vita Nuova is a book which only youth could have produced, and which must chiefly remain sacred to the young; to each of whom the figure of Beatrice, less lifelike than love-like, will seem the friend of his own heart. Nor is this, perhaps, its least praise. To tax its author with effeminacy on account of the extreme sensitiveness evinced by this narrative of his love, would be manifestly unjust, when we find that, though love alone is the theme of the Vita Nuova, war already ranked among its author's experiences at the period to which it relates. In the year 1289, the one preceding the death of Beatrice, Dante served with the foremost cavalry in the great battle of Campaldino, on the eleventh of June when the Florentines defeated the people of Arezzo. In the autumn of the next year, 1290, when for him, by the death of Beatrice, the city as he says "sat solitary," such refuge as he might find from his grief was sought in action and danger: for we learn from the Commedia that he served in the war then waged by Florence upon Pisa, and was present at the surrender of Caprona. He says, using the reminiscence to give life to a description, in his great way:

I've seen the troops out of Caprona go
  On terms, affrighted thus, when on the spot
They found themselves with foemen
  compass'd so.
(Cayley's Translation)

A word should be said here of the title of Dante's autobiography. The adjective Nuovo, nuova, or Novello, novella, literally New, is often used by Dante and other early writers in the sense of young. This has induced some editors of the Vita Nuova to explain the title as meaning Early Life. I should be glad on some accounts to adopt this supposition, as everything is a gain which increases clearness to the modern reader; but on consideration I think the more mystical interpretation of the words, as New Life (in reference to that revulsion of his being which Dante so minutely describes as having occurred simultaneously with his first sight of Beatrice), appears the primary one, and therefore the most necessary to he given in a translation. The probability may be that both were meant, but this I cannot convey.