I read that quote the other day, and I wholeheartedly agree (as in, I am adopting it as a life goal).
The "learning everything about something" is hard because I haven't yet been so incredibly interested in one thing to learn everything about it. But I would like to find that something.
Though I never want "knowing everything about something" to take me over, because I don't want to be known as a one-liner, like "oh she's the expert in [blah]" or "she's the one who does all the [blah]" and cease being a person.
That kind of happened to me, with the whole web design thing. Like, once I'd designed one website for one organization, I was presumed the tech-literate webmaster, and have never seemed to escape doing web work of some kind since (it's been, what, 6 or 7 years?). Although it's nice to be fulfilling a need, doing something that not everyone can do, sometimes it's like, can we just pretend that I don't know anything about that?!
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Speaking of being referred to as anything less than myself, it also bothers me when people say "my girlfriend" or "my wife". It makes me cringe a little. I don't want to be referred to as that - it's a little bit like I'm an object (nonexistent except for the association), but also like I take on qualities of what people assume the girlfriend/wife/etc. would have.
Just call me by my name, even if it doesn't mean anything to you.