Oil by Upton Sinclair is a novel that examines the human and moral conflicts associated with the oil industry in the United States. The story revolves around the relationship between Bunny and his father Ross, with the father representing a traditional model in understanding work and industrial practices, while the son strives to fulfill the ideals he learned at school. Sinclair shows how greed and corruption take over the oil world, pitting father and son in an intellectual conflict over workers' rights and values. The book addresses topics such as education, power, and morality, making it a thought-provoking read about the impact of the economy on personal and social relationships.