Hal knows the strongest thing in the universe is (willpower) wrote in doors,
Re: Batman/Ra's I know it is.
Children are a near constant source of aggravation and hope, sometimes in the same moment. After her mother died, Talia was ever at my side. She understood what I wanted of the world and shared that passion, much like I imagine your children do, Detective, whether they are of your blood or not.
Once she tried to separate herself from me and my will, as willful children sometimes do. I had to remind her of what her place was, how important it was to continue my legacy.