A reply to Michael Coughlan

Ford's book on the question of when human personhood begins, When Did I Begin? Conception of the Human Individual in History, Philosophy and Science (Cambridge University Press; 1988), is reviewed by Michael J. Coughlan in this issue of Bioethics. Here Ford responds to Coughlan's review, focusing on three topics: the importance of rationality for personhood, how far back one can trace the ontological identity of what is indisputably a human individual and human person, and the difference between the awareness of the reality of human persons and the varying degrees of perception of their value in the family and society.