"discourses on" is a correct phrase in English and can be used in written English.
Example Sentence: She held discourses on foreign policy in her lecture series.
The results hereunder thus contain two broad sections: families' patterns of use and discourses on the one hand, and school professionals' discourses on the other hand.
He discourses on how he learned to move onstage.
They are also invariably bound in discourses on nationalism.
They have different discourses on both the economy and international relations.
(Which makes you sound totally au fait with French discourses on art and representation).
The New Yorker, February 27 , 1926 P. 28Column discourses on children dancers, violinists and pianists.
I was so absorbed in Trollope's hundred-page discourses on romantic perversity, I missed drink dates.
Like The Prince, the Discourses on Livy admits of various interpretations.
The aboriginal New Yorker discourses on "Secession," which he claims is a misuse of the verb..
Or offer discourses on "your life, your choice" to defend drug use.
Yes, but Jarvis is still writing compelling revenge fantasies and fascinating discourses on our/his obsessions with sex.
