 In his lifetime, Clarke was infamous for his view of the trinity, and he sparked a vociferous debate (Ferguson 1974, 59–149; Pfizenmaier 1997, 179–216). Clarke was not officially censured (but nearly so), but it surely prevented his rising to higher office. Clarke’s writing on the trinity are relevant for understanding his other metaphysical positions, especially his identification of “person” with intelligent, acting agent rather than with a particular substance, which has not been sufficiently reconciled with his account of personal identity as wrapped up with an immaterial soul.