Andrew Crumey: ‘I would like to propose what I shall call the principle of eternal folly. It states that in nearly every era there arises, in some form, nearly every idea of which humans are capable. Certainly, there is the emergence of new ideas: technological ones are the most obvious, but there are others, too. I do think it fair to say that Jane Austen, Beethoven, and even the occasional entrepreneur have invented radically new things. However, the vast majority of ideas are recycled – and it is when we fail to recognise this, as we eternally do, that we commit folly.’ (Aeon).