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'Social life, he said, echoing Jolande's story about the doctor, has to be based on a certain degree of trust, on being on the same wavelength. When you have too many people whose culture and values are utterly different from your own, that trust can no longer be sustained. Even with his closest Muslim friends, he said, he felt that he could never be sure that they had the same understanding, the same references, the same sense of humour"'