Matthew was a consummate scholar who possessed a singular ability to understand and conceptualize social problems of all types. His research contributed greatly to existing knowledge of the etiology, prevention, and treatment of substance abuse, alcohol dependence, and mental health disorders. And, Matthew’s provocative articles assessing the state of social work education, practice, and research set forth ideas that will affect the trajectory of social work for years to come. His passion for knowledge—conveyed quietly and effectively to countless graduate students—was felt deeply by the many lives he touched over the course of an academic career that included appointments in the Department of Psychiatry and Behavioral Sciences at the University of Washington, the Department of Psychiatry at the Oregon Health Sciences University, the George Warren Brown School of Social Work at Washington University in St. Louis, the School of Social Work and the Department of Psychiatry at the University of Michigan, and the University of North Carolina at Chapel Hill.