The subject matter of this final chapter is the development of an understanding of aging and professional power over the past 50 years, using examples drawn from social welfare and old age, through developing the theories and philosophies derived from the French social theorist, Michel Foucault. Whereas previous chapters focused on postmodernism and the body in Western culture, this chapter consolidates analysis of the aging body, to explore the interrelationship between discourse, professional power, and intersubjectivity. Foucault’s concepts and ideas have become significantly influential in a variety of social science disciplines. At the same time, they can be puzzling for those wishing to understand their implications for analyzing professional power and aging. Foucault was a “masked philosopher” who deliberately sought to avoid being aligned with any particular school of thought. Foucault has had a “huge impression” on criminological studies and allowed the discipline to develop a new theoretical language. Foucault is yet to have the same effect on social gerontology. Unfortunately, Foucault said little about aging, and one can only speculate as to the ingenuity of his insights on the subject had he lived into old age himself.