Invoking Foucault, this chapter problematizes the constructed nature of both deviance and normalcy. On this basis, the chapter considers how the study of esotericism has facilitated historical reconsideration of the deviance of number of people and traditions, including Giordano Bruno, John Dee, Paracelsus and Hermeticism. Continuing this trajectory, Rudbøg queries whether Blavatsky’s Theosophy has ever been “normal.” Although the nineteenth century coincided with the emergence of a natural-scientific paradigm with which Theosophy partially clashed the pronounced exchanges between Theosophy and scholars such as Max Müller evinces that the demarcation between normalcy and deviance has remained blurred well into modernity.