Prince William will make the royal family proud when he makes his debut in print with the Earthshot book whereas Prince Harry's memoir will be seen as the 'ultimate betrayal'.That’s the view of royal commentator Duncan Larcombe, who believes the Prince’s foreword to the book, Earthshot: How to Save Our Planet, released on September 30 as a companion to his initiative to try to solve the global environmental crisis, will be a defining moment for William.