I think the difficulty the Enlightenment view of the world encountered very early on is that human beings struggle to see the Atlantic in a completely rational way. It’s not that it’s just a vast quantity of water: it’s also a vital part of the planet’s ecosystem, it’s probably the most important determinant of the weather in Britain… If we thought rationally about the Atlantic in the way that my parents encouraged me to think, we wouldn’t currently be despoiling it with the effluents of our industry and fishing its fauna to the brink of extinction. We would treasure it.