Contents: (1) "Speaking science to power" : the TRANSCEND approach (American Sociological Association, Plenary, San Francisco, 14 August 2004) ; (2) The security approach and the peace approach : some cultural factors conditioning the choice (World Culture Open: Building Peace through Harmonious Diversity, New York City, 10 September 2004) ; (3) What could peace between Washington and Al Qaeda/Iraq look like? Some points for presidential candidates to consider (Pace University, New York City, 11 September 2004) ; (4) One third of humanity (OIC-EU International Symposium on "Civilization and Harmony: Values and Mechanisms of the Global Order", Opening Remarks, Istanbul 2-3 October 2004).