[he watches her with the axe, surprised and not that she can lift it. he's so used to Mjolnir and the enchantment his father put on it, that seeing someone else lift his weapon is a surprise. then he remembers that this isn't Mjolnir and that surprise fades]

I am familiar with the saying -- my father, were he still alive, might have offered the same advice. [minus the part about this not being easy, even if that was how he meant it. his father, much as he loved him, had his flaws. that doesn't matter, though, and so he shakes his head, dismissing it and Diana, both] But this is beyond just a battle, lost. This is ... [they lost. they lost the war. you don't come back from an infinitesimal number of people simply blinking out of existence. even if they beat Thanos now, it wouldn't mean anything. those people wouldn't come back]