Trajan: Terrace 1, Purgatorio 10   The third and final example of great humility honors the Roman emperor Trajan (10.73-93), who fulfilled the duties of justice and mercy by delaying a military campaign to avenge the murder of a poor widow's son. Rather than delegating the woman's request to a subordinate or successor, Trajan decided that the responsibility of his high office compelled him to attend personally to this seemingly low-level matter.