Capt. Picard: The fight, Maxia, I destroyed an entire vessel. Entire crew
Dr. Crusher: Did you have a choice?
Capt. Picard: I don't know anymore. I just don't know.
Dr. Crusher has a theory that the headaches that Picard have been getting are related to emotional pressure from seeing his old ship again and it triggering memories of the battle of Maxia. He thinks she might be partly right so she asks him to talk about it.