I am an optimist about the UK. We have been involved in trade with our European partners, which we will always be doing whatever this relationship is. We are a member of the EU. That gives us benefits. But we have to figure out where that is going. In the world, we are a global trader already.

I’m an optimist about other people. I’m not an optimist about myself.

A stumbling block to the pessimist is a stepping-stone to the optimist.

Both optimists and pessimists contribute to society. The optimist invents the aeroplane, the pessimist the parachute.