But that exclusion in its turn is perhaps too dangerous for Derrida: no longer because of the disqualification with which it risks tarring the philosophising subject, but by the qualification with which it would mark the philosophical discourse; it would thus determine it as 'other' than the mad discourse, it would establish between them a relation of exteriority, and it would force philosophical discourse into the 'other side', into the pure presumption of not being mad.