Trying to be able to have, let's say, more than three partners was absolutely impossible, at least for my own relationships.

Economists have allowed themselves to walk into a trap where we say we can forecast, but no serious economist thinks we can. You don't expect dentists to be able to forecast how many teeth you'll have when you're 80. You expect them to give good advice and fix problems.

I see the God complex around me all the time in my fellow economists. I see it in our business leaders. I see it in the politicians we vote for - people who, in the face of an incredibly complicated world, are nevertheless absolutely convinced that they understand the way that the world works.

People today dont become economists to make the world a better place.

There's nothing wrong with a plan, but remember Von Moltke's famous dictum that no plan survives first contact with the enemy. The danger is a plan that seduces us into thinking failure is impossible and adaptation is unnecessary - a kind of ‘Titanic' plan, unsinkable (until it hits the iceberg).

There is much more to life than what gets measured in accounts. Even economists know that.

Norway has a relationship with the EU which is very close. It has to accept most EU rules. It has to pay EU membership fees. It has free movement of people just like other EU countries, but it's not actually in the EU.