Michael Tooley
Abortion and Infanticide
(Oxford: Claredon, 1983)
This is a careful philosophical exploration of the concepts and
moral arguments concerning the practices of abortion and infanticide.
Tooley takes the position that there is no moral offense
in ending a human life up to about 3 months after birth
because earlier than that the infant has not yet become a person.
His exploration of personhood might be the most original part of the book.
If you would like to discover other attempts to define personhood,
search the Internet for this expression:
"Personhood Bibliography".
James Leonard Park, medical ethicist