I don't think in national categories. For me it [policy] is about concepts and substance.

The outcome of the referendum does not affect those of my officials who have British nationality, since they work for Europe and not for the UK. They have made a major contribution to our common European project, and I will continue to count on their talent and commitment.

Here in Brussels, we did everything to accommodate David Cameron's concerns. My collaborators and I personally spent countless days and nights negotiating an agreement that was fair toward the United Kingdom and toward the other 27 Member States. I was then very surprised to see that this settlement played no role whatsoever in the campaign in the United Kingdom. At the same time it is hardly surprising.

You can't deepen the European Union against the wishes of the European countries.

Since populists never miss an opportunity to create a lot of noise about anti-Europe stance. However, the repercussions of the British referendum could quickly put a stop to such crass rabble-rousing, as it should soon become clear that the UK was better off inside the EU - economically, socially and in foreign policy terms.

For my generation, the monetary union has always been about forging peace.

In politics, there are different categories of friendship. My friendship with Greek Prime Minister Alexis Tsipras, for example .