Do think-tanks make any difference to anything? I ask because I stepped down this week after six years as chairman of the centre-right think-tank Policy Exchange. In a moving ceremony in the garden of Nick Clegg’s old school (Westminster), David Cameron marked the handing over of the reins from myself to the brilliant and witty Daniel Finkelstein of the Times. He spoke about the importance of the battle of ideas. He is right. Many of the nicest English people deplore ideology in politics, but the problem is that, if nice people have no ideology, others do not follow their example. Nasty ideology has the field to itself. This is very marked in the sphere of Islamism, in which Policy Exchange does excellent work. One reason that extremists can, almost literally, get away with murder, is that moderates do not have the facts and the contacts with officialdom to counter. Another value of think-tanks is that very few people are any good at policies. There are people who are good at ideas, and there are people who are good at administration, but you need to translate the ideas into forms that can be implemented. For instance, you encourage the idea of ‘free schools’, but, in order for them not to have perverse effects, you need to give them an incentive to include pupils from poor or bad backgrounds in their number. In this spirit, Policy Exchange invented the ‘pupil premium’. The knack is to be practical while at the same time being faithful to the original idea. Only think-tanks seem to manage this. They are tiny, but they matter. The few, not the many!
The question was about assisted suicide. ‘Charles’, said Jonathan Dimbleby, ‘You’re a Catholic. What’s your view?’ As soon as I was introduced in this way, I knew I hadn’t a chance.

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