Sia: "I'm an advocate of 'it's not what you are, it's who you are.'"

Sia: "I love the idea of how fast can we make the song, but I don't think that I'm necessarily, like, a super-talented songwriter. I think I'm just really productive. One out of 10 songs is a hit."

Sia: "You never know what I'm gonna do."

Sia: "The 'victim to victory' theory is that, if you listen to the radio, a large percentage of the hits are... about victim to victory, like, 'I'm having a terrible time.' And then the pre-chorus is, 'I don't know what's gonna happen next.' And the chorus is, 'Now I'm brilliant, and everything is great, because something happened to make it great.'"

Sia: "Knowing now what goes into making a successful artist, it's disheartening."

Sia: "My goal is to give girls and boys a different idea of expression. It's not always about looking pretty or cute. It's about expressing yourself however that may be, even if that's being silly or goofy or weird."

Sia: "It can be difficult navigating the line between tabloid gossip and authenticity."

Sia: "I don't go to shows because I just want to listen to the music performed live. I want to get to know the person who's performing it. Or I want to, like, take away a sense that I had an experience that nobody else is going to have again, or a unique experience for that moment."

Sia: "When you have a lot of people telling you what you are and perceiving you in a certain way, it's difficult to find your own identity."

Sia: "When you're in a different place every day, there's this kind of madness that sets in."

Sia: "When I'm in a songwriting phase, it's a phase. I don't just suddenly feel inspired and then write a song, because I always write with a co-writer."

Sia: "I don't care what people think of me, unless they think I'm mean or something, but I don't care if they think I'm like someone else because I know I'm not - I'm a total weirdo. I'm not selling a dream; I'm not selling fame like it is some sort of fantastic thing. I'm just trying to sell music and get on with my real life."

Sia: "Melody is pure intuition. I don't use any thinking brain when I do that. That's totally in the zone."

Sia: "I don't need security detail; I don't need anything special. I just walk around, and I can do that, and that's a real luxury when you're in my industry."

Sia: "I don't need to be rich anymore; I don't need to be a millionaire."

Sia: "I think that it depends what you mean by successful. If you mean 'make money' you need to be part of the machine unless you're one of those superhuman people who can do everything by yourself, and have workaholic tendencies and really good advisers and a good investor."

Sia: "I think that it would be unwise of us not to believe that there is life outside of us, intelligent life. And so I do believe in aliens."

Sia: "When people say, 'Show your face, you're not ugly.' I want to say, 'I know. I'm not doing it because I think I'm ugly; I'm trying to have some control over my image. And I'm allowed to maintain some modicum of privacy. But also I'd like not to be picked apart or for people to observe when I put on ten pounds or I have a hair extension out of place.'"

Sia: "People aren't honest about the horrors of fame. The downsides are so overwhelming that, for me, there is no payoff."

Sia: "I try not to do too much self-analysis apart from when I'm actually paying $170 an hour for it. I try to keep it in the room."

Sia: "I don't want to be famous, or recognizable."

Sia: "That's why 'Chandelier' was interesting to me... I wrote the song because there's so many party-girl anthems in pop. And I thought it'd be interesting to do a different take on that."

Sia: "That's the thing about awards - it's for the people who do all the hard work behind the scenes. An award is just a clap at them."

Sia: "I love watching reality TV, but being part of making it was just demoralizing."

Sia: "World, I want to leave you better, I want my life to matter, I am afraid I have no purpose here"

Sia: "Most people don't have to be under that pressure, and I'd like to be one of them. I don't go on Twitter. Because when people say things like, I don't know, 'I hope you get cancer and die,' it hurts my feelings."

Sia: "I'm sensitive and get easily upset and insulted."

Sia: "Life is pretty surreal and awesome."

Sia: "I liked myself much more before I got famous. I was much friendlier and had more energy."

Sia: "I get to sit at home with the dogs on the sofa, record in a closet in the office, send them off and, if I'm lucky, make a million dollars."

Sia: "I hope I am a psychotherapist's dream. I've spent enough hours in therapy."

Sia: "I'll be the songwriter for pop stars and then they can be the front person and I don't have to be famous."

Sia: "I have social anxiety. It's easier up on stage because there's security in being there. When I'm off stage I'm trying not to be a manic freak. I'm quite shy."

Sia: "People call me for the ballads. Apparently that's where I've been pigeonholed. But it's really interesting and really fun. It's my favourite part of the job, writing."