Arnold P. Goldstein served for over 30 years at Syracuse University where he directed the Center for Research on Aggression. His model of Aggression Replacement Training (ART) was enriched by diverse perspectives of many colleagues. This article highlights the ideas of three persons who strongly influenced Goldstein's work, namely, Jerome Frank, Albert Bandura, and Ervin Straub. An accompanying article in this issue addresses another of his contributions, The EQUIP Program of positive peer helping. Dr. Goldstein was to be recognized in 2002 by Reclaiming Youth International with the Spirit of Crazy Horse Award, an honor that was accepted posthumously by his wife, Susan. Social skills training has evolved across forty years to build a range of strengths and competencies enabling youth to move successfully into adulthood. Various outcome evaluations support the efficacy of such cognitive behavioral interventions in work with aggressive children and adolescents. Goldstein had a profound impact on this field through the ART model of intervention. He passed away on February 16, 2002, leaving a rich legacy of written works and trained practitioners world-wide who continue his charge of turning aggression into prosocial behavior.