The first comparative analytical reading in its literal, allegorical, anagogical, and moral senses of the 'Commedia' by Dante Alighieri, Florentine by birth not by custom, according to the intentions of his writings, vol 1, 'Preludio', vol 2, 'Inferno' I-XI, vol 3, 'Inferno' XII-XXIII, vol 4, 'Inferno' XXIV-XXXIV