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Boris Johnson was at the Tory conference yesterday for one purpose only — the exaltation of himself. This does not much matter when he is only Mayor of London, but would make him a wretched prime minister. He is not a man to believe in, to trust or respect save as a superlative exhibitionist. He is bereft of judgment, loyalty and discretion. Only in the star-crazed, frivolous Britain of the 21st century could such a man have risen so high, and he is utterly unfit to go higher still.