Eros and Civilizationis one of the most cited by other books / talks I tend to enjoy.
Some of my favorite bits…
The direction of progress is one of fluid gender:
315 This image of man was the determinate negation of Nietzsche’s superman: man intelligent enough and healthy enough to dispense with all heros and heroic virtues, man without the impulse to live dangerously, to meet the challenge; man with the good conscience to make life an end-in-itself, to live in joy a life without fear.
“Polymorphous sexuality” was the term which I used to indicate that the new direction of progress would depend completely on the opportunity to activate repressed or arrested organic, biological needs: to make the human body an instrument of pleasure rather than labor. The old formula, the development of prevailing needs and faculties, seemed to be inadequate; the emergence of new, qualitatively different needs and faculties seemed to be the prerequisite, the content of liberation.