'Record contracts are just like slavery... don't sign them'

"All these non-singing, non-dancing, wish-I-had-me-some-clothes fools who tell me my albums suck - why should I pay any attention to them?" - Prince hits back at his critics in a 2006 interview.

"The internet's completely over. I don't see why I should give my new music to iTunes or anyone else. They won't pay me an advance for it and then they get angry when they can't get it." - Prince consistently refused to hand over his music to the tech companies that changed the industry during his career. To this day, it's difficult to find his music on iTunes, Spotify or any other streaming services.

"The key to longevity is to learn every aspect of music that you can." - Appearing on The View, Prince gave some sage advice to Justin Bieber and aspiring musicians everywhere. He should know - he consistently performed for more than 40 years, and managed to release 39 studio albums during his career.

"I ain't mad at anybody. I don't have any enemies." - While this quote from an interview may have been an exaggeration, it's certainly true that he was universally loved by musicians around the world.

"Record contracts are just like - I'm gonna say the word - slavery. I would tell any young artist ... don't sign." - Prince has had famously torrid relationships with some of his record labels. After getting out of his contract with Warner Bros, he pointedly titled his 1996 album Emancipation.

"The internet's like MTV. At one time MTV was hip - and suddenly it became outdated. Anyway, all these computers and digital gadgets are no good. They just fill your head with numbers and that can't be good for you." - Many would agree with Prince, quoted here in a 2013 interview.