I'd say to definitely steer away from artsy quotes! When I wrote my personal statement, I wrote about why I wanted to study the subject, what I wanted to do with the qualification and my ambitions. I also included a little about my experience, but don't go overboard-it's not a job application! It's also good to put in a little bit about other interest to show that you have a broad range of experiences, and will be able to contribute to university life and the course, but not solely in a subject specific way. Also, remember that you are applying for university, so use an appropriate style of writing-not too formal, but definitely not colloquial! Hope this helps.
