Reason & Revolution (excerpt)
(engl.)
at Marxists Internet Archive
[www.marxists.org/reference/archive/marcuse/works/reason/index.htm]

Eros and Civilization (excerpt)
(engl.)
at Marxists Internet Archive
[www.marxists.org/reference/archive/marcuse/works/eros-civilisation/index.htm]

Nagations: Essays in Critical Theory (excerpt)
(engl.)
at Marxists Internet Archive
[www.marxists.org/reference/archive/marcuse/works/aggressiveness.htm]