One shouldn't pursue the wrong policies just because one is afraid of not being reelected. Those who intend to govern have to take responsibility for their countries and for Europe as a whole. This means, if need be, that they have to pursue the right policies, even if many voters think they are the wrong ones.

Between now and then, after 43 years of European marriage, the whole body of legislation will therefore have to be disentangled. That entails a whole range of specific and very complex questions: what will be the future legal status of the millions of EU citizens in the UK and the millions of Britons on the continent?

I'm ready to be insulted as being insufficiently democratic, but I want to be serious ... I am for secret, dark debates.

I am for it - not to make a threat, but to make clear that decisions that have been made are applicable law, even if you have voted against it. At issue here is European solidarity, which cannot be a one-way street. The traffic has to move in both directions.

I would describe that [friendship with Greek Prime Minister Alexis Tsipras] as a utilitarian friendship. At the time, his country was facing the prospect of leaving the euro zone and many Greeks felt abandoned by Europe. In such a situation, it seemed appropriate to me to present myself as a friend to Greece. It had to do with the country's dignity.

We must go back to teach Europeans to love Europe.

In 1913 many believed that there would never again be a war in Europe. The great powers of the continent were so closely intertwined economically that the view was widespread that they could no longer afford to have military confrontations.