This research aims at studying the Positivist ideas in George Eliot‟s The Mill on the Floss. The introduction talks about the Positivist theory and its founder August Comte. The theory puts science as a basis for any discussion or analysis. Comte thinks that man must have an object or a subject to love and respect, so he asks to substitute the idea of Deity with the idea of humanity as a whole unity including all men and women in all ages who work to serve society and achieve good morals.