This document summarizes Romanticism, Realism, and the New Age of Science in the 19th century. Romanticism emphasized feelings and individualism in reaction to Enlightenment rationalism. Romantic artists and architects revived medieval styles. Realism rejected Romanticism in favor of depicting ordinary life realistically in novels and paintings. The Industrial Revolution and scientific discoveries like Darwin's theory of evolution by natural selection undermined religious faith and contributed to secularization.