The article explores how some Christian thinkers in the 20th century criticized liberal political thought. They argue that liberalism, a dominant ideology in modern society, has roots in Christianity but can conflict with Christian values. The researchers analyze the critiques of three influential Christian figures: Reinhold Niebuhr, Jacques Maritain, and George Grant. Niebuhr challenges liberalism's optimism about human nature, Grant questions its ability to protect human values from technology, and Maritain discusses the idea of a secular state. The article concludes that liberalism's vision of justice is unattainable, and suggests drawing on Christian teachings for a more realistic approach to politics.