The essence of power is the knowledge that what you do is going to have an effect not just an immediate but perhaps a lifelong effect on the happiness and wellbeing of millions of people and so I think the essence of power is to be conscious of what it can mean for others.

I assumed the leadership within the Commonwealth for the fight against apartheid. I was very much assisted by Brian Mulroney, the Prime Minister of Canada, [and] Rajiv Gandhi, when he became the Prime Minister of India. And there were trade sanctions.

I believe [ Rajiv Gandhi] had a real sense that he would be assassinated.

Do you know why I have credibility? Because I don't exude morality.

In fact, soon after that [South African sanctions], I was going on an official visit to the UK and Margaret Thatcher instructed every minister to clear the decks of any outstanding matters between us - Australia and the Brits. And she went out of her way to make sure that that was as successful a visit as it possibly could be.

If you've got good chemistry at the top, it's an enormous help. It's easy to have good chemistry with some, not so easy with others. With [Robert Mugabe], for example.

There is a reciprocal respect for [ Elizabeth II], for her interest in the Commonwealth. The members of the Commonwealth recognise that here is a genuine interest from the top. So, that's one reason. I'm not putting it necessarily in order of importance.