In my book, the reason I call figures like Stalin, Mao, Pol Pot, etc., red leviathans is that they're actually serving a role that's necessary in a modern progressive revolution: they're the ones who say what is revolutionary and what isn't. Because it turns out that's not an easy question to answer.

A film score is not a symphony, or can it be… when you compose for film, you are part of a larger storytelling structure made up of acting, direction, lighting, cinematography and much more. Collaborating on these projects is a puzzle-solving exercise where you- as a composer- are looking for those things that music can do which the other elements cannot.

We're such a 'more is better' culture and we have to redefine what we value, what creates satisfaction, and the 'currency' of our lives. In America, what are we told are the two most important things we need in life? Money and fame, baby! That's fine, but you can't chase those goals at the expense of your own character, that makes you a paper tiger, a fool.

It's not enough to sit in our ivory towers or offices and think we have to go out and talk to people who are affected by a problem to understand what's going on, on the ground.

We're heading to a world where all our energy is derived from the sun and from renewables, a world where we will have a squanderable abundance of energy. There's 6,000 times more energy hitting the surface of the Earth than we consume as a species.

We get more energy from air than from food or drink. So, if we're absorbing that energy inefficiently, it's bound to catch up to us. A useful analogy is food: you can survive on a diet of 12 cookies a day, getting enough calories, but it's not nourishing, nor does it allow your body to operate efficiently.

In my experience, unless you are directly affected by a human rights abuse, you are unlikely to give it a second thought. How many times do you draw breath a day? It's about 22,000 times – you don't think about it until you can't. That's exactly how most people view human rights- they are generally apathetic and may express some concern or sympathy when they hear about something on the news, but they don't mobilise unless it affects them directly.

To have a career, you have to be able to break out of your ways of thinking about success, otherwise you'll just end up disappointed. Nobody has an upward trajectory all the time- there's undulations that go on.

My mind just never stopped thinking about what we could be doing next.

I'm genuinely convinced that the upcoming decade will be the era of India as a product nation. This presents a tremendous opportunity for India, and you might wonder why now? Broadly, it's a confluence of a few factors. First, the global demand driven by digital transformation isn't limited to Fortune 500 companies. We're discussing the Fortune 5 million here – from a small-scale apparel retailer, a neighbourhood restaurant to a colossal multinational, they all need to adopt technology.

Climate change isn't just warming the planet - it's fundamentally rewiring the hydrological cycle. Wet places are getting wetter, dry places drier, and the timing of water availability is becoming increasingly unpredictable.

I remember one particular interview with a boy, Peter, aged just 14. He told me how he posted on Instagram and then waited and waited for someone to like his posts. When they didn't' it made him feel awful and invisible. It's so heart-wrenching to think of that.