The “Scientific Highlights in Memory of Léon Van Hove” meeting brought together many distinguished scientists and several top officials of the European Community in honor of Léon Van Hove, an outstanding European scientist who contributed immensely to the research and development of mathematical and theoretical physics. One of the most influential physicists of the post-war period, Léon Van Hove inspired new research and work from statistical mechanics to field theory and multiparticle production. The papers in this volume recollect Léon Van Hove's early days as a scientist and recount his efforts in favor of scientific collaboration across national and international boundaries and of the cultural integration of Europe. Such insight must surely interest those who seek beyond academic and research knowledge in physics to understand its history and development, seen through the life and work of Léon Van Hove.Contents:Structure and Hierarchy (E R Caianiello)The Early Post-War Period of Léon Van Hove — A Recollection (A Messiah)Léon Van Hove, a Great European, A Man of Consensus (R M Bonnet)Science and Democracy (J P Contzen)LEP: A Big European Project for Fundamental Research (E Picasso)Léon Van Hove and the Max Planck Institute Für Physics (R Lust)The Scientific Contribution of Léon Van Hove (A Martin)The Search for Elementary Structures in Multiparticle Production in the Work of Léon Van Hove (A Giovannini)Extrema of P-Invariant Functions on the Brillouin Zone (L Michel)Europe and Its Scientists (J Goormaghtigh)The Antiproton Saga at CERN (1976 – 1984) (F Bonaudi)Symmetries and Fundamental Constants in Field and in String Theory (G Veneziano)Electron Holography (M A Van Hove)Euclidean Magnetic Group and Aharonov-Bohm Effect (S Fubini)In Memory of Léon Van Hove (J Van Hove)An Interview with Léon Van Hove (V De Alfaro)Readership: High energy and statistical physicists.Key Features:Covers an unusually broad spectrum of topics under the common theme of the study of complex and collective phenomena in macroscopic systemsAddresses systems from the scale of laboratory plasma or fluid experiments to the scale of the universeIncludes a complementary set of methods: theoretical and experimental investigations of basic plasma and fluid processes; numerical simulations; testing plasma astrophysics in the laboratory