It is a matter of principle. I know that the right hon. Gentleman knows very little about principle in the context of the Liberal Democrats, but we happen to believe in independence. It may have escaped his attention, but that is what our party is all about. The fact that a reference to independence was not included in-indeed, was intentionally excluded from-the wording of the Calman report meant that if we were to retain our principled position, we could not participate. That is what we call principle, and perhaps that is a little lesson for the right hon. Gentleman.