No generalizing beyond the data, no theory. And no theory, no insight. And if no insight, why do research? is a quote by Canadian Professor of Management Studies Henry Mintzberg (1939 - ), McGill University. The quote appears in his 2005 paper "Developing Theory about the Development of Theory" that appeared in the edited volume "Great Minds in Management: The process of theory development" (K. Smith and M. Hutt, eds.), Oxford University Press.