I think there's something so attractive about mystery.

(Talks about Miley Cyrus 'I always thought I'd be really fun to sing a song with Miley.

The business aspect is one of the most important things about having a music career, because every choice you make in a management meeting affects your life a year-and-a-half from now.

Writing 'We Are Never Getting Back Together' was one of the most hilarious experiences I have ever had in the studio because it just happened so naturally.

I took a chance, I took a shot And you may think I’m bullet-proof, but I’m not. You took a swing, I took it hard. And down here from the ground I see who you are

Live your life like you're 80 looking back on your teenager years. You know if your dad calls you at eight in the morning and asks if you want to go out for breakfast. As a teenager you're like no, I want to sleep. But as an eighty year old looking back you have that breakfast with your dad. It just little things like that, that helped me when I was a teenager in terms of making choices you won't regret.

As your career grows, the list of things that makes you happy should not become smaller, it should become bigger.