This essay examines the concept of madness and discusses whether madness should have a place in our metaphysical framework. It begins by exploring Nietzsche’s presentation of madness in his text The Gay Science, and concludes that madness ought to be included within philosophy. It then goes on to examine Foucault’s historical analysis of madness in his text, Madness and Civilisation, which demonstrates how the voice of madness has gradually been reduced to silence as the language of reason takes over. This essay concludes that the voice of madness ought to be included within philosophy for at times it is only the authoritative voice of madness that can lead us to new truths.