Background Articles from three landmark symposia on theory for nursing - published in Nursing Research in 1968-1969 - served as a key underpinning for the development of nursing as an academic discipline. The current special issue on Theory and Theorizing in Nursing Science celebrates the 50th anniversary of publication of these seminal works in nursing theory. Objective The purpose of this commentary is to consider the future of nursing theory development in light of articles published in the anniversary issue. Approach The Editorial Team for the special issue identified core questions about continued nursing theory development, as related to the nursing metaparadigm, practice theory, big data, and doctoral education. Using a dialogue form...