The drama and the trauma of the relationship you have when you're 16 can mirror the one you have when you're 26. Life repeats itself.

That moment when Kanye West secretly records your phone call, then Kim [Kardashian] posts it on the internet.

You might think I'm bulletproof, but I'm not.

A great song will say how you feel better than you ever could.

I've always written songs the same way. You learn different tricks - you learn craft, you learn structure, all that - as you go.

When I was a teenager I felt like we were always being stereotyped as being really intense and dramatic and passionate and hopelessly romantic and excitable, now in retrospect I think I need to let you know those things are amazing. I hope you never lose those things.

There are so many emotions that you're feeling, you can get stifled by them if you're feeling them all at once. What I try to do is take one moment - one simple, simple feeling - and expand it into three-and-a-half minutes.