John Paul Stevens,
Thornburgh v. American College of Obstetricians and Gynecologists…
(1986)
“ I should think it obvious that the State's interest in the protection of an embryo--even if that interest is defined as "protecting those who will be citizens," ibid.--increases progressively and dramatically as the organism's capacity to feel pain, to experience pleasure, to survive, and to react to its surroundings increases day by day. The development of a fetus--and pregnancy itself--are not static conditions, and the assertion that the government's interest is static simply ignores this reality. ”
