[699] Inf. xxxiii. 4; Aen. ii. 3.
[700] Par. ii. 16.
[701] Aen. vi. 309; Inf. iii. 112.
[702] Aen. vi. 700; Purg. ii. 80.
[703] Purg. i. 135; cf. Aen. vi. 143 “Primo avulso non deficit alter, etc.”
[704] See Inf. xxxi.; Purg. xii. 25 sqq.
[705] Purg. vi. 118: “O highest Jove that wast on earth crucified for us.”
[706] Par. i. 13 sqq.; Par. ii. 8.
[707] The provenance, etc., of Dante’s classification of sins in the Inferno, like everything else in Dante, has been interminably discussed. The reference to the De officiis of Cicero is due to Dr. Moore. See “Classification of Sins in the Inferno and Purgatorio,” Studies in Dante, 2nd Series. Also cf. Hettinger, Die göttliche Kömödie, pp. 159-162, and notes 6 and 23 on p. 204 and 207 (2nd ed., Freiburg in Breisgau, 1889). Dante’s main statement is in Inf. xi.
[708] In whom does not the awful anguish of the suicides (Inf. xiii.) arouse grief and horror?