The political philosopher who wrote "The Prince" and is often associated with political realism is Niccolò Machiavelli. Published in 1532, the work discusses power dynamics, political strategy, and the use of pragmatism in governance. Machiavelli is known for his candid approach to politics, suggesting that the ends often justify the means. His ideas have sparked extensive debate and criticism, contributing to the study of political theory and the ethical implications of governance, and solidified his legacy as a pivotal figure in modern political thought.