 Circularity and contradiction are just two of the major objections launched at Locke’s theory of personal identity shortly after it is published. Importantly, these are objections to which sympathetic readers of Locke are still responding (see Atherton 1983, Weinberg 2016, LoLordo 2012, Thiel 2011, Garrett 2003, Schechtman 2014, etc). This gives the reader a glimpse of some of the lines of attack that were launched against Locke’s discussion of persons during the early modern period. Nevertheless, not all of Locke’s peers attacked his picture of persons, and numerous philosophers worked to defend his view.