 His stories are often set in poor, hot and dusty tropical places such as Mexico, West Africa, Vietnam, Cuba, Haiti, and Argentina, which led to the coining of the expression "Greeneland" to describe such settings.The novels often portray the dramatic struggles of the individual soul from a Catholic perspective.Greene was criticised for certain tendencies in an unorthodox direction—in the world, sin is omnipresent to the degree that the vigilant struggle to avoid sinful conduct is doomed to failure, hence not central to holiness.