During the seventeenth century, as an aspect of Romantic "Primitivism", the figure of the "Good Savage" was held up as a reproach to European civilization, then in the throes of savage wars of religion. People were especially horrified by the Massacre of Saint Bartholomew (1572), in which some 20,000 men, women, and children were massacred, chiefly in Paris, but also throughout France, in a three-day period. This led Montaigne to write his famous essay "Of Cannibals" (1587), in which he stated that although cannibals ceremoniously eat each other, Europeans behave even more barbarously and burn each other alive for disagreeing about religion. The treatment of indigenous peoples by the Spanish Conquistadors also produced a great deal of bad conscience and recriminations. Bartolomé de las Casas, who witnessed it, may have been the first to idealize the simple life of the indigenous Americans. He and other observers praised the simple manners of the indigenous Americans and reported that they were incapable of lying. European guilt over colonialism, with its use of recently invented guns on people who did not have them inspired fictional treatments such as Aphra Behn's novel "Oroonoko, or the Royal Slave", about a slave revolt in Surinam in the West Indies. Behn's story was not primarily a protest against slavery but was written for money; and it met readers' expectations by following the conventions of the European romance novella. The leader of the revolt, Oroonoko, is truly noble in that he is a hereditary African prince, and he laments his lost African homeland in the traditional terms of a Golden Age. He is not a savage but dresses and behaves like a European aristocrat. Behn's story was adapted for the stage by Irish playwright Thomas Southerne, who stressed its sentimental aspects, and as time went on it came to be seen as addressing the issues of slavery and colonialism, remaining very popular throughout the Eighteenth Century.