Sequel to "Which Art In Hope." As they pass from mortal life, Armand and Teresza Morelon, foremost of all the residents of the wholly ungoverned world of Hope, lay a charge upon their granddaughter Althea: to break the lightspeed barrier, travel to Earth, and determine why no radio emissions from the cradle of Mankind have reached Hope since the Spoonerite Hegira. It shapes the young polymath's life from that moment onward. Althea spends her young adulthood playing Hope's equities market, amassing a fortune for her mission. At 30 she falls in love with Martin Forrestal, a genius of another...