In the early years of this new millennium, as the field of educational psychology continues to define its place within the educational enterprise, it is imperative that those in the field reflect on the foundation of their domain. This special issue can help keep the lessons of the past squarely in their minds and thus contribute to needed reflection and subsequent dialogue on the proper place of philosophy in the stream of educational psychology. The contents are both diverse and well conceived, beginning with a talk to educational psychologists that is suitably complemented by four articles that recognize certain compelling issues. The depth and variety of those articles, along with insightful commentaries, are touchstones for educational psychologists interested in the roots of the domain and in the links between current trends and philosophical thought.