The date of its compilation cannot be fixed with precision, but was probably not far from 1295; and the words with which it closes seem to indicate that the design of the 'Divine Comedy' had already taken a more or less definite shape in Dante's mind.
The deepest interest of the 'New Life' is the evidence which it affords in regard to Dante's character. The tenderness, sensitiveness, and delicacy of feeling, the depth of passion, the purity of soul which are manifest in it, leave no question as to the controlling qualities of his disposition. These qualities rest upon a foundation of manliness, and are buttressed by strong moral principles. At the very beginning of the book is a sentence, which shows that he had already gained that self-control which is the prime condition of strength and worth of character. In speaking of the power which his imagination gave to Love to rule over him, a power that had its source in the image of his lady, he adds, "Yet was that image of such noble virtue that it never suffered Love to rule me without the faithful counsel of the reason in those matters in which to listen to its counsel was useful." His faculties were already disciplined by study, and his gifts enriched with learning. He was scholar hardly less than poet. The range of his acquisitions was already wide, and it is plain that he had had the best instruction which Florence could provide; and nowhere else could better have been found.
The death of Beatrice was the beginning of a new period of Dante's self-development. So long as she lived she had led him along toward the right way. For a time, during the first ecstasy of grief at her loss, she still sustained him. After a while, he tells us, his mind, which was endeavoring to heal itself, sought for comfort in the mode which other comfortless ones had accepted for their consolation. He read Boëthius on the 'Consolations of Philosophy,' and the words of comfort in Cicero's 'Treatise on Friendship.' By these he was led to further studies of philosophy, and giving himself with ardor to its pursuit, he devoted himself to the acquisition of the wisdom of this earth, to the neglect, for a time, of the teachings of Divine revelation. He entered upon paths of study which did not lead to the higher truth, and at the same time he began to take active part himself in the affairs of the world. He was attracted by the allurements of life. He married; he took office. He shared in the pleasures of the day. He no longer listened to the voice of the spirit, nor was faithful to the image of Beatrice in following on earth the way which should lead him to her in heaven. But meanwhile he wrote verses which under the form of poems of love were celebrations of the beauty of Philosophy; and he was accomplishing himself in learning till he became master of all the erudition of his time; he was meditating deeply on politics, he was studying life even more than books, he was becoming one of the deepest of thinkers and one of the most accomplished of literary artists. But his life was of the world, worldly, and it did not satisfy him. At last a change came. He suddenly awoke to consciousness of how far he had strayed from that good of which Beatrice was the type; how basely he had deserted the true ideals of his youth; how perilous was the life of the world; how near he was to the loss of the hope of salvation. We know not fully how this change was wrought. All we know concerning it is to be gathered from passages in his later works, in which, as in the 'Convito,' he explains the allegorical significance of some of his poems, or as in the 'Divine Comedy,' he gives poetic form to his experience as it had shaped itself in his imagination. There are often difficulties in the interpretation of his words, nor are all his statements reconcilable with each other in detail. But I believe that in what I have set forth as the course of his life between the death of Beatrice and his exile, I have stated nothing which may not be confirmed by Dante's own testimony.