Atheism and moral relativism

Atheism is the religious belief that there is no God, sometimes to the extreme, such as the cases of the Marquis de Sade and Ayn Rand (both radical atheists). Moral Relativism is a branch of philosophical ethics that believes that morality is subjective, based on the location and time period in which the majority of people in those cultures agree is moral and immoral. As such, moral relativism has been naturally at odds with Biblical truths and common sense throughout human history, well before the Ten Commandments.