Margaret Cavendish was one of the most original, loveable and eccentric of women writers. Pepys called her "mad, ridiculous, and conceited" but when she paid her famous visit to London in 1667 he ran all over town to see her. And many of her other contemporaries were no less fascinated. Posterity has continued to feel the attraction; to her many admirers she has always been "the incomparable Princess," and Lamb enthusiastically praised her as "the...