Introduction: Testing our tool : open questions on the Derveni papyrus / Ioanna Papadopoulou -- Some desiderata in the study of the Derveni papyrus / Kyriakos Tsantsanoglou -- On the rites described and commented upon in the Derveni papyrus, Columns I-VI / Alberto Bernabò -- Democritus, Heraclitus, and the dead souls: reconstructing columns I-IV of the Derveni papyrus / Franco Ferrari -- Derveni and ritual / Fritz Graf -- Divination in the Derveni papyrus / Sarah Iles Johnston -- How to learn about souls: the Derveni papyrus and Democritus / Walter Burkert -- Unlocking the Orphic doors: interpretation of poetry in the Derveni papryus between pre-Socratics and Alexandrians / Jeffrey Rusten -- The Derveni papyrus and the Bacchic-Orphic epistomia / Yannis Z. Tzifopoulos -- The Derveni papyrus between the power of spoken language and written practice: pragmatics of initiation in an Orpheus poem and its commentary / Claude Calame -- "Riddles over riddles": "mysterious" and "symbolical" (inter)textual strategies: the problem of language in the Derveni papyrus / Anton Bierl -- Reading the authorial strategies in the Derveni papyrus / Evina Sistakou -- The Orphic poem of the Derveni papyrus / David Sider -- The garland of Hippolytus / Richard Hunter