Most people my age, their musical life ended in the '80s. They stick with what they know. But my tastes are much broader. And I don't want to stop learning.

Getting to No. 1 makes everyone feel better; of course it does. But it's swings and roundabouts with these things. Sometimes you make a great record, and it clicks with people. And other times it passes them by; there's nothing you can do. It's still the same record.

I'm sure there's a subconscious 'go for it' thing with turning 50. You want to do as much as possible and there are thoughts of how little time we have on the planet. For a lot of musicians in their 50s, the best days are behind them. I'd like to try and show that there is a future.

Of course I'm proud of what I've done, but I'm interested in what's next. I want to be relevant now, in 2012. I've done my bit for the past. I've only ever been about what's next, really, and I'll be that way until I keel over.

I love the Constitution. But it's still a document, meant to protect human beings and ensure their life, liberty and the pursuit of happiness.

Happiness is the first principle of life. Happiness basically means well-being. It is always good and always a choice... We need to make the choice to be happy in a particular situation, just as it is, and at a given moment.

Happiness lies in moments, and while you have it, you're not even aware; only afterwards do you know you were happy.

If I can bring happiness to people all around the world, then I will try my best to do so.