Ateism
Atheism is not a religion but a form of belief that denies the existence of God. Although denial of god existed in ancient times, for example in the days of ignorance, but only in the 19th century, atheism forms a reflection and flow of thought, with a thoughtful thinker who denies the existence of god with its own arguments . Famous atheist figures are Friedrich Nietzsche, as well as Karl Marx, Friedrich Nietzsche is a sincere person who advocates atheism, with his statement "God Is Dead". His statement has shocked western society in those days. His statement marks the beginning of a change in central values in the West. Hence, the value system of the West, began to change and no longer centered on the Christian faith.