Although theory rich, contemporary psychologists have no consensual understanding of what constitutes a theory or how theory should be used, revised, and appraised. Likewise neglected are ways that a theory is taken up in specific research domains and how a theory can change over time. In response to calls for renewing psychology’s appreciation of theory, this article introduces an understanding of theory as vivacious and biographically complex. A dynamic perspective affords means to explore how a theory travels, is taken up in different times and places, and changes. So appreciating theory’s liveliness reveals not only what premises of humans are valued at a given time or within a given research domain, but uncovers vestigial features that were abandoned but might be valuable to contemporary theory work. Theory’s livelihood and travel is illustrated here by Erving Goffman’s early work on the self and its uses by Henry Riecken, Robert Rosenthal, and E. E. Jones.