Lars Gustafsson’s Funeral Music for Freemasons (1983), the Swedish writer’s fifth book of fiction to be translated into English, follows the lives of three free spirits of the 1950s, from their aspiring student years in Stockholm to their present realities, so different from their youthful imaginings. Jan Bohman, a brilliant poet become smalltime African merchant––a latterday Rimbaud––is about to be deported from Senegal. Hans (“Hasse” to his friends), an idealistic research physicist, is now a professor at Harvard, leading the protected surburban life of an American academic.…