What is success? I think the most important thing is to achieve what you set out to achieve. Just being a CEO in itself is not success. I would not relate success to a title or a position. My career has had a level of serendipity all along. I've never planned anything out more than a few years.

The world we want is an enormous responsibility.

Imagine all the food mankind has produced over the past 8,000 years. Now consider that we need to produce that same amount again — but in just the next 40 years if we are to feed our growing and hungry world.

If you work at an insurance company that sells premiums you wouldn't even sell to your mother, how happy would you feel to work there? It's going to eat you up. It might last a few years, but it doesn't attract the best people, and it certainly doesn't create the energy and engagement you need to be a long-term performing company.

It is unacceptable that more than 1 billion people are hungry every day while another billion are obese.

The last few months have seen a welcome race to the top. Consumers have sent companies a clear signal that they do not want their purchasing habits to drive deforestation and companies are responding. Better still, companies are committing to working in partnership with suppliers, governments and NGOs to strengthen forest governance and economic incentives. It can be done and this Declaration signals a real intention to accelerate action.

My biggest fear is that we [Unilever company] at one point in time will not be able to attract the best and brightest [workers]. I don't worry so much about the business, the strategy. If we can continue to attract the best, I know they will ultimately figure out how to run the company in a very tough environment.