Lecturers: Quantum Symmetries in 2D Massive Field Theories; D. Bernard. On Knot and Manifold Invariants; R. Bott. The Metric Aspect of Noncommutative Geometry; A. Connes, J. Lott. Observables, Superselection Sectors, and Gauge Groups; C. Fredenhagen. Non-Compact WZW Conformal Field Theories; K. Gawedzki. S-Matrix Theory for Black Holes; G. 't Hooft. Whitman Theory for Integrable Systems and Topological Quantum Field Theories; I. Krichever. Quantum Groups in Lattice Models; V. Pasquier. Lagrangian Conformal Models; R. Stora. Seminar Speakers: Integrability Properties of the Collective String Field Theory; J. Avan. Correlational Functions of Local Operators in 2D Gravity Coupled to Minimal Matter; Vl.S. Dotsenko. W-Algebras and Langlands-Drinfeld Correspondence; E. Frenkel. Aspects of Quantizing Lorentz Symmetry; A. Schirrmacher. 11 additional articles. Index.