Tomorrow will be a momentous day in British history.

Whether Scotland votes for independence or opts to remain within the union, the future of these islands changes forever.

The nature of Scotland’s relationship with the rest of the UK will be irrevocably redefined – whether through far greater devolution or the complete severing of 300-year-old ties.

The repercussions will be felt here too and must inevitably lead to a reassessment of our relationship with our neighbours across the border.

The gaze of the microscope will turn its focus on those who crave an independent Wales.

The question will be how does Plaid Cymru respond to the mood in Edinburgh, Glasgow, Aberdeen and Dundee.

What is clear from the massive swing towards Yes north of Carlisle is that the people of Scotland no longer fear the unknown.

Whether that swing is enough to secure independence is ultimately irrelevant, it is enough to illustrate that – as Bob Dylan once said – the time’s they are a-changing.

The No campaign’s predominantly negative stay-as-you-are-it’s-dangerous-out-there campaign has failed. It has failed because it is mired in the past and because we the people are no longer afraid; we want to go out and see what can be done.

The politics of fear – of never straying from the well-worn path – are dead.

What we crave is a believable, achievable map charting a new route that includes us all, empowers us all, and offers us a role in a future we can shape for ourselves.

The status quo is not an option.

As Dylan told his senators and congressmen: “Your old road is rapidly ageing, get out of the new one If you can't lend your hand.”

What we require is a positive, inclusive vision of where we go from here – and a reasoned voice to explain, convince and guide us – all of us, not just the dyed in the wool nationalists.

Over to you, Plaid Cymru.