At this point, Mill meets the great, passionate partner of his life, Harriet Taylor. This chapter endeavours to explain the complex relationship and way of life that they created for themselves during the lifetime of her first husband, John Taylor. The choice of celibacy is investigated. Even for freethinkers, chaste affairs were often pursued in this time period and milieu, including by people close to Mill such as W. J. Fox (with Eliza Flower) and Auguste Comte (with Clotilde de Vaux). This chapter also reveals the way that Harriet became a kind of substitute deity and religion for Mill. He frequently applied religious language to her, including deeming her judgement to be ‘perfect’ and ‘infallible’. With Harriet, Mill’s devotional sense finally found an outlet.