And on environmental issues he [her friend and Treasury official, Nick Ridley] was incomparably rational. He would not adopt a burdensome regulation or make an expensive commitment of public money simply because a newspaper or a pressure group had asserted that is was the ‘green’ thing to do. He always asked such questions as: What benefits will it bring? How much will it cost? How solid is the scientific evidence underlying this claim? Margaret Thatcher
Margaret Thatcher, Times Newspapers Limited, March 7, 1993

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