I used to do a lot of interviews in the early '80s when my career started but it came to a point when I decided I didn't want to talk anymore and people kind of understood that and left me alone.

He who does not fill his world with phantoms remains alone.

I would say 'I'm alone but I'm not lonely.' But I was just kidding myself.

This is nourishing redemptive we become less alone inside.

The problems that the world faces - from nuclear proliferation to climate change - can't be tackled by the West alone. They need a coalition of not just West and East but they need a coalition of Christian and Jew and Muslim.

The biggest opportunity in 2013 is in Africa. It has seven out of the ten fastest-growing economies in the world. In Nigeria alone there are 100 million people with mobile phones. In total 300 million Africans - five times the population of Britain - are in the middle class.

Happiness must be cultivated. It is like character. It is not a thing to be safely let alone for a moment or it will run to weeds.

A career is all very well but no one lives by work alone.

What good is sitting all alone in your room?

Of all our possessions wisdom alone is imortal.