The most well-known of NietzscheÕs works, Thus Spake Zarathustra spells out a philosophy where God is dead and is replaced by the ÒSupermanÓ, a human of incredible power that rules over humanity. A series of discourses also explains how life should be lived out and what things should be important in all our lives. This work, although controversial, has impacted our society in many ways, often without us even knowing it.