Joseph S. Wholey is Professor Emeritus in the University of Southern California's (USC) School of Public Policy, Planning, and Development. He received his BA from Catholic University, Phi Beta Kappa and his MA in mathematics and PhD in philosophy from Harvard University. His work focuses on the use of strategic planning, performance measurement, and evaluation to improve the performance and the accountability of public and nonprofit organizations. Theorist, evaluator, educator, author, in this oral history, Joseph Wholey shares his work and views on fostering good government. Wholey's lifework focuses on how evaluators can constructively help federal policy makers and program managers make program theory manifest, clarify program objectives, and deliver relevant and useful performance information for program improvement. This article presents an edited transcript of an interview with Wholey in which he uses the analogy of an apple to remind everyone that each bite of performance information has a role in providing policy makers and program managers with relevant and useful information for improving government performance and results. (Contains 30 notes.)