Six presentations followed by discussions. Contents: Introduction par P. DUCREY; H.VAN WEES, Stasis, Destroyer of Men. Mass, Elite, Political Violence and Security in Archaic Greece; W.RIESS, Private Violence and State Control. The Prosecution of Homicide an its Symbolic Meanings in Fourth-Century BC Athens ; A. CHANIOTIS, Policing the Hellenistic Countryside. Realities and Ideologies; C. BRELAZ, Ladieu aux armes : La defense de la cite grecque dans l'empire romain pacifie ; A. W. LINTOTT, How High a Priority did Public Order and Public Security have under the Republic? ;R. MacMULLEN, The Problem of Fanaticism; Y. RIVIERE, L'Italie, les iles et le continent: Recherches sur l'exil et l'administration du territoire imperial (Ier-IIIe siecles); Epilogue par C. BRELAZ et P. DUCREY.