German philosopher, Friedrich Nietzsche was one the most controversial figures of the 19th century. His evocative writings on religion, morality, culture, philosophy, and science were often polemic attacks against the established views of his time. Nietzsche demonstrates that the Christian world is steeped in a false piety and infected with a 'slave morality'. With wit and energy, he turns from this critique to a philosophy that celebrates the present and demands that the individual imposes their own 'will to power' upon the world. As he asserts, the initial form of morality arises from the warrior nature of the ruling castes of ancient civilizations, who viewed themselves as good because of their wealth and power in contrast to the weakness of those that they enslaved.