The Aviator 280-306
Mikhail Bakhtin (1895-1979) was a Russian philosopher, literary critic and scholar. He was an active part of academic discourse in the Soviet Union in 1920s, and after his suppression, his ideas were rediscovered in the 1960s. This fact, in addition to Bakhtin's appeal to an intellectual like Geiger, are probably why Geiger recommends him to Innokenty.
pg. 284 — Carthage, which should have been destroyed, and that senator (what's his name?)
Carthage was perhaps the Roman Republic's greatest enemy and it took the Romans three wars (the Punic Wars) to conquer them. Roman Senator Cato the Censor was known for ending all his speeches with the phrase "Carthago delenda est," which translates to "Carthage must be destroyed."
pg. 288 — the Virgin
The Virgin Mary
pg. 300 — the parable of the prodigal son
This is a story focused on love and redemption, which ties into Innokenty's situation and the following paragraph in which he extols the virtues of mercy and love.