Abstract

In Reasons and Persons, the greatest contribution to utilitarian philosophy since Henry Sidgwick’s The Methods of Ethics, Derek Parfit supports his Reductionist contention “that personal identity is not what matters” by turning to the neurosurgical findings of Roger Wolcott Sperry. Parfit’s scientifically informed argument has important implications for W. E. B. Du Bois’s contentious hypothesis of African-American “double-consciousness,” which he initially advanced in “Strivings of the Negro People”, before amending for inclusion in The Souls of Black Folk. An analysis of “Of the Coming of John,” chapter 13 in The Souls of Black Folk, helps to trace these ramifications, resituating Du Bois’s notion from the pragmatist to the utilitarian tradition, and revealing how his concept effectively prefigured Parfit’s scientifically informed Reductionism.