The Master–Slave Dialectic
In the Phenomenology of Spirit Hegel proposed the famous "master–slave dialectic": the master depends on the slave’s labor and recognition to confirm his own status as master, and thereby, in this very dependence, loses true independence; the slave, meanwhile, through hard labor transforms the world and forges his self-consciousness, and in the end surpasses the master in the development of self-consciousness. This dialectical structure was later repeatedly drawn upon and elaborated by thinkers such as Marx and Sartre to analyze the complex relation of power and self-consciousness.