But @9toenails, Hume is referring to the concept of the immortal soul there - not the modern sense of self posters here are referring to (which of course is the “self” referenced in the “unstable sense of self” that is mentioned in the DSM V). A complete lack of internal sense of who one is is a cause for concern. Some people do seem to have vastly richer inner worlds than others; but children in even the fairly early stages of language acquisition are generally keen to express preferences (particularly in the negative 
) & share interests. Were we able to ask him, doubtless Hume would have views on the experiences he describes in the passage you quoted (beyond his stated frustration with those who disagree with him about this matter): I would not presume to argue that indicates the presence of a soul/sacred inner self; but it’s clear that Hume was blessed (no pun intended) with a temporal “Inner Me”.
The ongoing & seemingly-endless “must shoehorn TW into everything (ostensibly) for & about women” is both infuriating & crushing. Every tiny TINY gain women [have] manage[d] to make gets snatched away from them. I’d had quite enough of toys being taken away from me because another child usually a boy was having a tantrum & demanding I “share” (aka not have my turn) by the time I was, oh, about 2y3m/2y4m (I tried very very hard to be patient & understanding). Ditto boys pushing past the queue for the slide at playgroup; boys saying I “wasn’t allowed” to like/do/play & even SAY certain things; & boys absolutely hogging the playgroup pedal cars with grown-up help! “Those are the boys’ toys Nitro…” 
And now my peer group & I are (allegedly-supposedly) The Grown-Ups; & despite a glorious burst of Girl Power & Toys Are Just Toys/School Subjects Are Just School Subjects (etc), it’s all rather plus ça change as regards grabby tantrummy boys snatching at what girls have; & girls being told by The Grown Ups (eg British Cycling/Girlguiding policy makers/Scottish Government/Stonewall) that they have to “share nicely” (ie “Oh just give him it! Yes & that one too! It’s not as if there’s nothing left for you to play with, I’ve no idea why you’re whinging at me now. And look, he’s being really kind & saying you can play with him. What do you mean you don’t want to? That’s very VERY unkind of you & I’m really disappointed in you. No, I’m taking ALL your toys away now because you’ve made him cry & you can just sit & think about what you’ve done. I’m going to have to tell your parents about this when they come to collect you… SO disappointed.) & “Be Kind”.
As @KrakowDawn says, it is offensive nonsense to state that none of us are beholden to our bodies. Most women quite literally pay in blood for, even if not fertility, the health benefits that come with [still] getting your period. (Three cheers for bone mass!) Of course, even with treatments my periods are so heavy I sometimes need blood transfusions on top of routine iron infusions (going on the pill is indeed not an option): freakishly flexible as I am I can’t harness and shape this, or any other aspect of my disabilities away. How wondrous would that be, to never again be a hair-tugging fist-clenching lip-biting ball of pain, thrash-squirming as you try to just make it hurt enough less to be bearable? And no more flooding! Indelible memories of the soul-crumpling awfulness of it happening at school might at least have the edges smoothed off by the end to ruined bedding… Sometimes I have a sense of needing to apologise to my body because, purely by virtue of being a woman, I am automatically denied certain treatments, will receive less pain relief at a lower dose in an emergency & if I have an MI it may - even now - be missed, because of the differing presentation.
Before my (unmistakably female, even if the adult bit has been questioned even in the last year - suppose at least nobody’s queried the human?) body was quite so broken & I Was A Real Person, one of my hobbies was singing. Certainly there are women who can’t sing soprano; & even most sopranos don’t have the range I used to (all that singing I’d done was very a fantastic base for SaLT, but unsurprisingly the NHS were concerned with getting me speaking again, not returning to singing); but my voice, & how I could use it? Unique to me - & down to my female body*.
Ballet for me meant pointework. Men can do pointe (Bottom in the Dream is the most famous example) & the Trocs have been doing it for years (importantly, deliberately set up as a farce - no invitation of direct comparison with female dancers). There is no doubt but that male & female “ballet bodies” look different: some slight variety around the world, eg NYCB’s dancers are famously tall & have been ever since the Company was founded, but the basics are all there. Schools in the UK don’t emulate the Russian practise of having a 50kg maximum weight for girls in pas de deux classes & in the last few years White Lodge (Royal Ballet Y7-11 boarding school has finally come up with pastoral care guidance for students with eating disorders) but the fact remains that to have a chance at being accepted into vocational training you need to be slim & long-limbed. A small head & long neck; slim hips & narrow shoulders; knees that hyperextend; feet with a high arch & instep plus the first 3 toes of equal length; & no “bulky” muscles. Male dancers are bigger, stronger, broad of shoulder - with legs that make those of superheroes look positively weedy. Male & female dancers build up different muscles because their bodies need to do different things. I’m sure you could find, in the general population, a woman, or even some women, capable of lifting some men over their heads one handed. Of catching them in fish dives & throwing them about the place. It is silly to try to pretend that is standard though. It is my female body that determined I was the one trusting my partner while they held me -basically doing a backbend - up over their head & strolled around the studio. My partner’s inhabiting a male ballet body let him control how many turns I did when we pirouetted; the sweep & angle of my body in a fish dive; and the speed and smoothness of each & every promenade. Boys/men have so much control over things in PDD that, while it’s not great partnering to only blame them for mistakes, if something goes wrong it’s pretty much certain to have been their fault. I miss dancing terribly - I dream of it still, I can even physically feel it when watching performances. I can’t somehow remake my body into one that can dance again, though; & any suggestion that bodies are malleable in any such way is rank ableism.
As a general observation, it really is hugely frustrating that men have created & sustained a myth that trans women are The Most Marginalised & Vulnerable (etc); & even more men have essentially chosen to self-ID as “member of an oppressed minority”. Featuring much trampling all over women who are obviously not REALLY vulnerable - it’s just disability/domestic violence/FGM/“honour killings”/gynae issues/other insignificant nonsense after all, right?
You don’t get to pull “it’s a woman’s body because it’s my body & I’m a woman BECAUSE I SAY SO”. We are brought back again to the small children who by this logic are now a whole array of creatures & vehicles etc. Acceptance without exception at any age means that Alfie has exactly as much right to identify as a dachshund as he does to identify as a girl. There is no logical coherence to accepting the latter but rejecting the former. Could we have a crack at usurping Johnson - without resorting to sending in tanks (James Blunt optional) - simply by announcing our bodies are Prime Ministerial bodies? Doesn’t seem to be a goer for me: could a Tory perhaps give it a go & report back?
We absolutely all of us inhabit our own completely unique bodies. But we get issued with either the male version, or the cool upgrade known as female; and then we stay that sex forever. Somehow we have large numbers of people genuinely believing that “sex is a spectrum” & humans are able to change their sex using cross-sex hormones. Not simply nonsense being peddled - risible as it is - but a lie that is dangerous.
I’ve fallen asleep at least a dozen times while trying to write this - alas even outrage cannot force my brain into obedience - so while I’ve tried checking it am sorry if you spend time trying to untangle neuroblip-wrought nonsense & can make no sense of any of it.
- If anyone out there is tempted by some boy/transgirl chorister whataboutery, I very much have to hope you are somehow unaware that although female [singing] voices obviously do not break dramatically in the way male voices do, they still mature. My voice matured late (apparently it got confused about the instructions for use - or perhaps it WAS right about power tools being for people 18+?) & the appearance of the sudden power & firm extension of lower range was, for me, sudden & secure: a girl’s voice to a woman’s voice.