Introduction : speaking of chiasmus -- Pattern recognition -- Memory patterns and patterns of memory -- Recovering the aesthetic of chiasmus -- Learning justice and practicing penance : Phlegyas and David -- Echoes in the underworld -- Sanctifying the memory arts -- Echo in Arcadia : Sidney's legacy -- The place of the eclogues -- The Arcadian arts of memory -- Mirror and allegory : Spenser's calling -- Unfinished books and double "scrines" -- Memorial edifices and "iust memorie" -- Extreme dramatic symmetry : Shakespearean triads -- The triumph of Diana -- Chiasmus early and late -- Conclusion : chiastic echoes -- The chiastic aesthetic recovered -- Patterns of memory and memory patterns -- Recognized patterns