Pastoureau combines a charming, conversational tone with a haughtiness I found entirely endearing. A director of studies at the Ecole Pratique des Hautes Etudes at the Sorbonne in Paris, he writes from a position of professorial confidence. He has conducted extensive research into the history of colour for a quarter century and his aim is to correct misapprehensions and banish ignorance. His style is not to inquire, explore or interrogate, in the fashion of academic studies today. It is to impart knowledge.