Rosmer and Rebecca echo the sentiment 'we two are one' before performing a show of unity by falling together into the mill-race. Only this terminal act can dispel all doubt of each other's love. Only by this act, is the integrity of each assured and confirmed. The same need for integrity, earlier, 'swept poor unhappy Beata' into the mill-race.
Is this a play about the need for moral certainty amidst ambiguity, doubt and guilt?
Is this what Leonard Cohen means by:
I saw her wince, I saw her cry
I saw the glory in her eye
Myself I long for love and light
But must it come so cruel, and oh so bright?
