Talk followed by a debate
with the participation of Professors B. Feringa,
V. Heitz, J.-P. Launay,
J.-M. Lehn, D. Leigh, A. Moore,
J.-P. Sauvage and F. Stoddart.

Moderator: Professor Jacques Reisse

Support from Solvay S.A., the Belgian "Loterie Nationale - Nationale Loterij", the "Communauté française de Belgique", the Fondation David et Alice Van Buuren and the Hotel Metropole is gratefully acknowledged.