Star Trek First Contact - Captain Picard is confronted about the Borg being his white whale

In the last third of the film Captain Picard is confronted by his 21st century guest Lilly Sloane, asking why if they can stop the Borg taking over the ship by blowing it up, why don’t they do it? It comes to a head that Picard is suffering from PTSD as well as a quest for vengeance for the violations he suffered back during the series of Star Trek The Next Generation when the Borg assimilated him and made him Locutus of Borg. In this scene Lilly calls him Ahab, comparing the Borg to the white whale Moby Dick. It is in this that Picard realizes he is putting the crew and the future of humanity down a path where he could get them all killed for his revenge.