Art The line king 15 August: For decades, artists have looked at Paul Klee's work and thought: 'I can do that.' All they have proved is Klee's distinctive genius. Adrian Searle catches the real thing.Head in the clouds artist was inspired by science 10 August: Edinburgh exhibition explains how a book on meteorology helped John Constable make the sky 'the chief Organ of Sentiment' in his pictures. Clouding the issue 10 August, leader: Many celebrated painters knew little or nothing about how to paint skies, according to a meteorologist at the Edinburgh festival. Is there a psychiatrist in the house? 8 August: Salvador Dali exploited his subconscious like few artists before or since. Freud said he had the eyes of a 'candid fanatic'. As an exhibition of his work opens at the Dean Gallery, Elisabeth Mahoney tries to make sense of it all. Preview by Adrian Searle

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