> John Stuart Mill said that his wife, Harriet Taylor Mill, “was the inspirer, and in part the author, of all that is best in my writings[. On Liberty] belongs as much to her as to me.” In his Autobiography, he says
> With regard to the thoughts [expressed in the book], it is difficult to identify any particular part or element as being more hers than all the rest. The whole mode of thinking of which the book was the expression, was emphatically hers.
https://dailynous.com/2026/03/19/on-liberty-now-officially-has-two-authors/

“On Liberty” Now Officially Has Two Authors - Daily Nous
An edition of On Liberty published this month is the first to officially name Harriet Taylor Mill as a co-author alongside John Stuart Mill. The new volume is edited by Piers Norris Turner (Ohio State), Jo Ellen Jacobs (Millikin), Helen McCabe (Nottingham), Lilly Osburg (Karlsruhe Institute of Technology), Michael Schefczyk (KIT), and Christoph Schmidt-Petri (KIT), and is published