I think there's room for both private exploration and group work in Yoga.

I've never lost perspective on who I am. Well, maybe briefly, but generally I'm pretty balanced.

Love is stronger than justice.

One of the rewards of success is freedom, the ability to do whatever you like.

Unfortunately, the mechanism for doing philanthropy in a structured way isn't yet in place in India. I already do a fair bit and support various causes such as education, sanitation, health. But selling costly drugs at affordable prices is philanthropy in itself.

Socially, the Cuban revolution created an education system and health service that remain the envy of much of the neo-liberal world.

After the cancer-free diagnosis, I thought I'd go off and do the things I never did in my teens and twenties. I realised putting things off in life can be dangerous because suddenly you can find you've run out of time.

The biggest public health challenge is rebuilding health systems. In other words, if you look at cholera or maternal mortality or tuberculosis in Haiti, they're major problems in Haiti, but the biggest problem is rebuilding systems.