I just think that the skepticism about truth has almost completely flipped - from being something associated with generally left-leaning progressives to being something which is a tool of right-wing populists and demagogues. I think a lot of those people writing books ten years ago would now think those books are no longer needed, they've kind of been vindicated.

Looking out over the port of Dover, with the endless steam of boats coming in and out, every British citizen is reminded that belonging here has never been about blood or genes. It's simply about being at home on this discrete island and being aware of the privileges and responsibilities that brings.

Economics is uncertain because its fundamental subject matter is not money but human action. That's why economics is not the dismal science, it's no science at all.

Progress is more of a challenge for the cynic but also more important and urgent, since for the optimist things aren't that bad and are bound to get better anyway.

I'm not one of these people who is sour about academia. I'm very lucky not to be in academia, but I am an absolute parasite. While I was writing my book on comparative philosophy I was drawing on some fantastic scholars - university based people. The academy is absolutely necessary, but there should also be a role for those bringing it together. It's such a frustration sometimes.

Trade has played a vital role in the social evolution of humankind. It allowed people to specialise, which raises both skill levels and efficiency. It brought people from different lands together, co-operating rather than competing over resources.

Indeed, without emotion it seems unlikely we can even have morality.