The biggest danger to the European Union comes not from those who advocate change, but from those who denounce new thinking as heresy. In its long history Europe has experience of heretics who turned out to have a point.
I have no time for those who say there is no way Scotland could go it alone. I know first-hand the contribution Scotland and Scots make to Britain's success - so for me there's no question about whether Scotland could be an independent nation.
Britain is not in the single currency, and we're not going to be. But we all need the eurozone to have the right governance and structures to secure a successful currency for the long term.
The EU must be able to act with the speed and flexibility of a network, not the cumbersome rigidity of a bloc. We must not be weighed down by an insistence on a one size fits all approach which implies that all countries want the same level of integration. The fact is that they don't and we shouldn't assert that they do.