By exchanging, human beings discovered ‘the division of labour’, the specialisation of efforts and talents for mutual gain. It would at first have seemed an insignificant thing, missed by passing primatologists had they driven their time machines to the moment when it was just starting.

Today, of Americans officially designated as ‘poor’, 99 per cent have electricity, running water, flush toilets, and a refrigerator; 95 per cent have a television, 88 per cent a telephone, 71 per cent a car and 70 per cent air conditioning. Cornelius Vanderbilt had none of these.

the capacity of a tiny pocket calculator in 2000 would have cost you a lifetime’s wages in 1975.

Getting richer is not the only or even the best way of getting happier. Social and political liberation is far more effective, says the political scientist Ronald Ingleheart: the big gains in happiness come from living in a society that frees you to make choices about your lifestyle – about where to live, who to marry, how to express your sexuality... See more

I find the world is full of people who think that their dependence on others is decreasing, or that they would be better off if they were more self-sufficient, or that technological progress has brought no improvement in the standard of living, or that the world is steadily deteriorating, or that the exchange of things and ideas is a superfluous ir... See more

I shall argue that there was a point in human pre-history when big-brained, cultural, learning people for the first time began to exchange things with each other, and that once they started doing so, culture suddenly became cumulative, and the great headlong experiment of human economic ‘progress’ began. Exchange is to cultural evolution as sex is ... See more

The average South Korean lives twenty-six more years and earns fifteen times as much income each year as he did in 1955 (and earns fifteen times as much as his North Korean counter part).

If economic growth does not produce happiness, said the new wisdom, then there was no point in striving for prosperity and the world economy should be brought to a soft landing at a reasonable level of income. Or, as one economist put it: ‘The hippies were right all along’.