Priestley later wrote that the book that influenced him the most, save the Bible, was David Hartley's Observations on Man (1749). Hartley's psychological, philosophical, and theological treatise postulated a material theory of mind. Hartley aimed to construct a Christian philosophy in which both religious and moral "facts" could be scientifically proven, a goal that would occupy Priestley for his entire life. In his third year at Daventry, Priestley committed himself to the ministry, which he described as "the noblest of all professions".Qtd. in Jackson, 33. See Schofield (1997), 40–57; Uglow, 73–74; Jackson, 30–34; Gibbs, 5–10; Thorpe, 17–22; Tapper, 314; Holt, 11–14; Garrett, 54.
Priestley later wrote that the book that influenced him the most save the Bible, was David Hartley's Observations on Man (1749). Hartley's psychological, philosophical, and theological treatise postulated a material theory of mind. Hartley aimed to construct a Christian philosophy in which both religious and moral "facts" could be scientifically proven, a goal that would occupy Priestley for his entire life. In his third year at Daventry, Priestley committed himself to the ministry, which he described as "the noblest of all professions".Qtd. in Jackson, 33. See Schofield (1997), 40–57; Uglow, 73–74; Jackson, 30–34; Gibbs, 5–10; Thorpe, 17–22; Tapper, 314; Holt, 11–14; Garrett, 54.