Spencer insisted that free enterprise was the key to social progress.斯潘塞坚称，自由企业制是社会进步的关键。Social progress is normally a matter of struggles and conflicts.社会进步通常是斗争和冲突的结果。Education is contributive to social progress.教育促进社会进步。Such a theory would freeze all social progress.这种理论会使一切社会进步停滞不前。