“The Pilgrimage of Lancelot” is a continuation of the novel “The Path of Cassandra.” The story takes place in the not-so-distant future—after an ecological catastrophe and the unification of European states under the rule of a president who calls himself a “Messiah.” Heading for the far island of Jerusalem to find the extraterrestrial Lance, who wants to receive healing from the “Messiah,” we begin to understand familiar truths in a new way—love, faith, goodness…