Take the Churchillian view on Brexit - and do nothing
'I have not become the King's First Minister in order to preside over the liquidation of the British Empire," Winston Churchill told the US Congress in a famous speech. How much more important, then, not to become the Queen's First Minister to preside over the liquidation of the United Kingdom?
Alas for him, David Cameron's place in history is already allocated.
His putative successors might like to ponder theirs. They certainly ought to ponder what is at stake. The end of the 300-year old union of Scotland and England is certainly one, although the exact mechanism and timing of such an event is far from certain.