"Of course, sexuality has never only been about reproduction, obviously, with human beings, anyway. But at the moment it's almost cut free to kind of float wherever it will float. And sexuality has been mixed with many things that I think the ancients would have been surprised to find it mixed with."

Jung’s ‘Red Book’, a secret journal of dreams and drawings, has been in a Swiss vault for the better part of a century. The burden of its care has fallen on his descendants, who have reluctantly allowed it to be published.