Cities simply don't have the powers they need to radically innovate in cutting obesity or the number of disaffected teenagers.

All innovation is about letting go, saying goodbye to things to create space for the new.

I can think of nothing worse than a think-tank where everybody agreed.

Systems governed by only one set of rules are more vulnerable than those with variety.

All over the world, social innovation is tackling some of the most pressing problems facing society today - from fair trade, distance learning, hospices, urban farming and waste reduction to restorative justice and zero-carbon housing. But most of these are growing despite, not because of, help from governments.

Bangalore has become a centre for healthcare.

There is a yearning for people to return to elementary moral virtues, such as integrity and commitment. We distrust people who have no centering of values. We greatly respect businessmen, for example, if they display those virtues, even if we don't necessarily agree with the people.