Materialist philosopher, who systematised the atheistic ideas of the Enlightenment. He saw religion as the root of ignorance, fear and deception and fundamentally incompatible with reason. Not only did he reject the whole concept of the church, he also rejected the utopic idea of universal equality which lies at the heart of Christianity. He was of the opinion that society depends on inequality for its very existence. Holbach’s work was repeatedly denounced as blasphemous and even burnt.