Constance, or Solitary Practices (1982) is the central volume of the five novels of Lawrence Durrell's The Avignon Quintet, published from 1974 to 1985. It was nominated for the Booker Prize in 1982. Involving some of the characters from the preceding Livia, the novel also introduces new ones. It is set before and during World War II, in France, Egypt, Poland and Switzerland.