Although I am a young leader, I actually came to it strangely quite late. I have a different perspective, partly because of my family, partly because of what I did for ten years: negotiating trade deals, working out in Central Asia doing assistance projects.

The Liberal Democrat Party and the Conservative Party come at things very differently when it comes to Europe. When it comes to political reform, we have a much greater tradition in the Liberal Democrats of social justice and fairness than the Conservatives do.

Grown-up politicians talk to each other across party lines. Over the last few weeks I have had lengthy conversations with Ed Miliband, David Miliband, with Tony Blair, with Peter Mandelson... talking about Europe, talking about political reform.

I will not accept a new wave of fiscal retrenchment, of belt-tightening, without asking people at the top to make their contribution, to make an additional contribution. I don't think you can ask people on middle and low incomes, who, after all, are the vast majority of the British population, to bear the brunt of this adjustment.

What I hope is in five years' time, I can go to the British people in the election and say: Lots of you doubted that coalition politics worked, but it has worked.

Joining the Liberal Party was a no-brainer for me... And when you are a young man, you don't get a calculator out saying, 'Am I going to get to power?' You get propelled forward by idealism.

Voters tell politicians what they want through the ballot box. Constantly second-guessing them by speculating whether the parties should gang up on each other misses the point.