Competition, Efficiency and Welfare contains a collection of papers in honor of Manfred Neumann. This collection was prepared as a tribute to a teacher and scholar, whose accomplishments have enriched various fields of economics. The magnitude of his interests is reflected in the breadth of topics covered in this volume: industrial economics, competition policy and related topics. However, if one unifying principle runs through Manfred Neumann's work, it is the belief in the power of competition.