 Some scholars take Locke’s assertion that the identity of substance is neither required nor enough for the persistence of any person to be evidence that persons are modes (or attributes), rather than substances (or things themselves). Such scholars then turn to Locke’s place-time-kind principle, for further evidence for their view. They take Locke’s assertion that no two things of the same kind can be in the same place at the same time to mean that no two substances of the same kind can be in the same place at the same time. Souls are thinking substances for Locke, and if persons are substances, they would count as such. Thus, persons cannot be substances, for otherwise wherever there is a person and her soul there are two thinking substances in the same place at the same time. Those who offer mode readings additionally turn to Locke’s claim that person is a “forensic term” and Locke’s bold assertion that a demonstrative science of morality is possible as evidence that the term “person” must be a mode term, rather than a substance term. This line of interpretation is popular today (see LoLordo 2012, Mattern 1980, Uzgalis 1990), but dates back to Edmund Law (1769).