Volunteering has been undervalued in Britain for a long time. Often it has been seen as a kind of cut-price, amateur version of work that would be better done by the state. When politicians speak about it, people hear in the background the sound of budgets being cut.

If you want a free society, teach your children what oppression tastes like. Tell them how many miracles it takes to get from here to there. Above all, encourage them to ask questions. Teach them to think for themselves.

Britain, relative to the U.S., is a highly secular society. Philanthropy alone cannot fill the gap left by government cutbacks. And the sources of altruism go deep into our evolutionary past.

Food prices are often kept artificially high. The result is that the Millennium Development Goals set out by the United Nations at the start of the new millennium are not being reached. Fine words have not yet been turned into deeds.

Volunteering has been undervalued in Britain for a long time. Often it has been seen as a kind of cut-price, amateur version of work that would be better done by the state. When politicians speak about it, people hear in the background the sound of budgets being cut.

While everyone else is thinking about economics and politics, executive salaries and the future of the euro, do the opposite, even if it's hard. Invest in the spirit.

Close to a billion people - one-eighth of the world's population - still live in hunger. Each year 2 million children die through malnutrition. This is happening at a time when doctors in Britain are warning of the spread of obesity. We are eating too much while others starve.