Civilization, Modern History 24 Civilization 22 Philosophy 12 Congresses 10 Technology and civilization 10 Popular culture 8 History, Modern 7 Philosophy, Modern 7 Social change 6 Social history 6 Literature, Modern 5 Politics and government 5 Regression (Civilization) 5 Biography 4 Christianity 4 Civilization, Western 4 Eighteenth century 4 Forecasting 4 Twentieth century 4 Arts, Modern 3 Conduct of life 3 Intellectual life 3 Relations 3 Science and civilization 3 Social aspects 3 Twenty-first century 3 Aims and objectives 2 Astronautics and civilization 2 Civilization, Christian 2