In 2000 a seminar in Timbuktu, Mali, was followed up with another gathering in Bologna to reflect on the conditions of reciprocal knowledge between East and West. This, in turn, gave rise to a series of conferences in Brussels, Paris and Goa, culminating in Beijing in 2007. The topics of the Beijing conference were "Order and Disorder", "New Concepts of War and Peace", "Human Rights" and "Social Justice and Harmony". Eco presented the opening lecture. Among those giving presentations were anthropologists Balveer Arora, Varun Sahni, and Rukmini Bhaya Nair from India, Moussa Sow from Africa, Roland Marti and Maurice Olender from Europe, Cha Insuk from Korea, and Huang Ping and Zhao Tinyang from China. Also on the program were scholars from the fields of law and science including Antoine Danchin, Ahmed Djebbar and Dieter Grimm. Eco's interest in east–west dialogue to facilitate international communication and understanding also correlates with his related interest in the international auxiliary language Esperanto.