Question: Where did As I look ahead, I am filled with foreboding; like the Roman, I seem to see the River Tiber foaming with much blood""). come from?
Sentence (from "Rivers of Blood speech"): The expression "rivers of blood", which did not appear in the original speech, is an allusion to a line from Virgil's "Aeneid" quoted by Powell (""As I look ahead, I am filled with foreboding; like the Roman, I seem to see the River Tiber foaming with much blood"").
Relevant evidence: Yes