Jean Etienne Liotard (1702-1789) was one of the most accomplished, idiosyncratic and witty artists of 18th-century Europe. Born in Geneva, he pursued a remarkable career, travelling across the continent and the Near East, portraying a riveting cross-section of society. Liotard worked in Paris, London, Amsterdam, Venice, Constantinople and Vienna and excelled as a specialist in the delicate art of pastel. He became renowned for the uncanny realism...