Three Essays on Religion: Nature, the Utility of religion, and Theism is an 1874 book by the English philosopher John Stuart Mill, published posthumously by his stepdaughter Helen Taylor, who also wrote the introduction. It is made up of three essays: "Nature" and the "Utility of Religion", were both written between 1850 and 1858, while "Theism" was composed between 1868 and 1870.[1] The book is critical of traditional religious views, instead advocating for a "religion of humanity".[2]