Finally, Foucault in “The Discourse on Language” (1982) argues that discourse operates through rules of exclusion:

Discursive systems may be clubbed under two types:
However, this does not imply that human beings are slaves of discourse. Foucault suggests that we may overcome the overwhelming power of discourse and its formations:
By questioning our will to truth
By restoring to discourse its character as an event
By abolishing the sovereignty of the signifier.