唯心主義 觀念論 唯物史觀 現象和本體 物自身 因果律 自由選擇 目的論 理性哲學vs.當為哲學 思辨哲學vs.當為哲學 理性的狡計 批判與革命的實踐 理論與實踐的統一 The German debate of theory and practice Idealism Phenomena and noumena Free choice Teleologism The cunning of reason The critical and revolutionary activity The unity of theory and practice