Foucault argues madness is expressed and explored through art. Tragedy and madness are the outer limits of reason for Foucault, and in tragedy the tragic figure and the madman confront each other. The two limits come together. A final shift occurs at the end of the section. Whereas the animal nature of classical madness took away the humanity of the madman, now the idea of non-being takes away everything. Madness ultimately becomes an expression of nothing and non- existence.