By "sexuality" is meant the sum of all desires that do not result from immediate economic pressures, such as things that don't result in money or physical possessions of any sort.
Okay, was there maybe a better word to describe that phenomenon. Like, "desire"? Because my sexuality usually involves someone cumming.
But seriously, if you want to read psychoanalyst literature that fucks your brain, maybe try something more recent than Freud. Like Anti-Oedipus by Deleuze & Guattari.
From what I got through, they mostly seem gleeful that schizophrenics fuck over Freud's theories rather than concerned with the problems of actual schizophrenics. They kind of redefine the term to talk about their point on the fluidity of desire and self.