In Ideas of the 20th Century, Dr. Daniel Bonevac examines the major intellectual movements that shaped modern Western thought. Beginning with the Scientific, Agricultural, and Industrial Revolutions, the course explores how traditional beliefs came under pressure, creating tensions between human freedom and scientific determinism and contributing to cultural and political upheavals. Through the ideas of thinkers such as Nietzsche, Marx, Freud, and the existentialists, as well as debates over totalitarianism, liberty, language, truth, and justice, the course traces the search for meaning in the modern world. By connecting philosophy, politics, and culture, it reveals how the central ideas of the 20th century continue to shape contemporary society and the challenges facing Western civilization today.