Lukaács once was fascinated by Simmel, a short time later, he alienated from Simmel, then he began to criticize Simmel. The years from 1905 to 1910 provided an opportunity for Lukaács to learn from Simmel overall, in which period Lukaács was fascinated by Simmel. Lukaács became alienated from Simmel since 1910, in which period he saw Simmel as a transitionary philosopher. Lukaács began to criticize Simmel’s relativism and irrationalism in 1923, when his famous book History and Class Consciousness was first published.