Herbert George Wells 
The Autocracy of Mr Parham [EPUB ebook] 

Mr. Parham is a university academic of the traditional, classical sort, very much a snob and unhappy with many of the social trends of the time. Sir Bussy Woodcock is a self-made millionaire of sharp intelligence and great energy but lowly beginnings and no cultural education. This unlikely pair meet by chance and form an intermittent relationship. In an attempt to foster this acquaintance that goes on for six years, Mr. Parham finds himself involved in séances that summon a Master Spirit from the beyond. This entity occupies Mr. Parham’s body, and commences to inspire a political movement (the League of Duty Paramount) that overthrows the British government in a coup d’état. This is an intriguing tale which Wells uses to explore opposing social and political views of the period, with the fantasy element a vehicle for so doing. On the way, he creates a couple of memorable characters.