Zac Goldsmith

If you tell people, 'that old banger of yours, we're going to tax the hell out of it,' they'll rightly tell you to get lost. But if you tell people that when they next buy a car, the tax will be adjusted so that the cleanest ones will cost less and the polluting ones will cost more, most people would say 'fair enough.'

All schools should teach children basic cooking skills. Every school should be able to buy sustainable, good quality food wherever possible from local sources. Every school should include food-growing in the curriculum. For some, that will mean twinning with willing farms. For others, it will mean literally building their own small farms.

To ask questions can become the laziest and wobbliest occupation of a mind, but when you must yourself answer the problem that you have posed, you will meditate your question with care and frame it with precision.

Early in the 1990s, I flew alone in a dandelion-yellow, single-engine, 180-horsepower Piper Cherokee from Westchester County Airport in New York westward to the Rocky Mountains, landing and refuelling a good many times in middle-sized cities and towns along the way.