What is right to be done cannot be done too soon.
This is a clean push toward timely goodness. It works in any life: apologies, thanks, help—do them now. In the story, it counters delay and polite excuses. The absolute phrasing gives it motto strength; it sounds like something you’d put over a desk. Austen often turns ethics into elegant sentences, and this is one of them. The line links intention to action with no wiggle room. It’s gentle urgency you can live by.