History shows us a lot of things. It shows why the Lord's Prayer includes the supplication: "And lead us not into temptation." In my day, dissertations were still written by hand, or drummed out with a typewriter. In the past, you had to round up the literature, find the books and find the passages. Nowadays you click on Wikipedia or Google and you have everything you need. This probably makes it more difficult to resist temptation.

The goal of European unification can only be achieved if everyone participates, perhaps with exceptions in some areas. Not all countries are part of monetary union, and not all are in the Schengen area. But the fundamental goal should be to keep everyone on board.

The United States lived on borrowed money for too long, inflating its financial sector unnecessarily and neglecting its small and mid-sized industrial companies.

I'm a firm believer in the monetary union.

If the Schengen system (of border-free travel) is destroyed, Europe will be seriously endangered politically and economically. That is why we Europeans have to invest billions in Turkey, Libya, Jordan and other countries in the region as quickly as possible everybody as much as they can.

We in Europe need to discuss how we can improve the community. That is the correct order.

Britain is economically very closely integrated with its European partner countries. Were these ties to be cut, it would be a huge step backwards for the country and would weaken it considerably. In the era of globalisation, "splendid isolation" is not a smart option.