‘The Glastonbury of the Mind’ is how Bill Clinton described the Hay Festival and while I would loathe to describe Glastonbury as mindless, the overt selling point of Hay is its intellectualism. Authors, philosophers, poets, ecologists, anthropologists, and some musicians as well, were among the headline acts here as part of the - in fact - two simultaneous festivals occurring in marquess either side of the Britain’s bookshop, Hay-on-Wye on the Welsh-English border (just in Wales, alas it is a British festival). These are the eponymous Hay Festival (the one…