By October 2016, he was writing a book called "Age of Unreason"; it is a diatribe against "populist nationalism". Osborne's lucrative speaking engagements for a range of financial institutions since his dismissal as Chancellor helped make him the highest earning MP in 2016. In February 2017 he started a new role as a part-time advisor to BlackRock, the world's largest fund manager, for a salary of £650,000 for a one-day a week. The job was approved by the Advisory Committee on Business Appointments, which stated that during Osborne's time as Chancellor "there were no specific policy decisions ... that would have affected BlackRock", and the Permanent Secretary at the Treasury had "no concerns" about Osborne taking up the role.