The _Commedia_, at the first glance, shows the traces of its author's life. It is the work of a wanderer. The very form in which it is cast is that of a journey, difficult, toilsome, perilous, and full of change. It is more than a working out of that touching phraseology of the Middle Ages in which "the way" was the technical theological expression for this mortal life; and "viator" meant man in his state of trial, as "comprehensor" meant man made perfect, having attained to his heavenly country. It is more than merely this. The writer's mind is full of the recollections and definite images of his various journeys. The permanent scenery of the _inferno_ and _purgatorio_, very variously and distinctly marked, is that of travel. The descent down the sides of the Pit, and the ascent of the Sacred Mountain, show one familiar with such scenes--one who had climbed painfully in perilous passes, and grown dizzy on the brink of narrow ledges over sea or torrent. It is scenery from the gorges of the Alps and Apennines, or the terraces and precipices of the Riviera. Local reminiscences abound. The severed rocks of the Adige Valley--the waterfall of St. Benedetto; the crags of Pietra-pana and St. Leo, which overlook the plains of Lucca and Ravenna; the "fair river" that flows among the poplars between Chiaveri and Sestri; the marble quarries of Carrara; the "rough and desert ways between Lerici and Turbia," and whose towery cliffs, going sheer into the deep sea at Noli, which travellers on the Corniche road some thirty years ago may yet remember with fear. Mountain experience furnished that picture of the traveller caught in an Alpine mist and gradually climbing above it; seeing the vapors grow thin, and the sun's orb appear faintly through them; and issuing at last into sunshine on the mountain top, while the light of sunset was lost already on the shores below: "Ai raggi, morti gia' bassi lidi,"[40] or that image of the cold dull shadow over the torrent, beneath the Alpine fir: "Un' ombra smorta Qual sotto foglie verdi e rami nigri Sovra suoi freddi rivi, l'Alpe porta;"[41] or of the large snowflakes falling without wind among the mountains: "d'un cader lento Piovean di fuoco dilatate falde Come di neve in Alpe senza vento."[42]