The introduction to this volume captures virtue's dizzying variety by explaining its roots in classical ethics, transformation through theological appropriation, and engagement with global wisdom traditions. We propose that the work of Shakespeare patches together virtue's many realizations, active both on the horizontal axis of Aristotelian capacity and dynamism and the vertical axis of Judeo-Christian valuation. Threading together exemplary passages from Shakespeare and previews of the volume's contributions, the introduction proposes that Shakespeare creates virtue ecologies -- worlds that allow for person-affirming capacities to be tested and flourish. Alive to virtue's textual and performative dimensions, we establish a vocabulary and background for the essays that follow.