Speaking to a Vatican-sponsored anti-abortion conference, Francis said the opposition to abortion isn't a religious issue but a human one.
"Is it licit to throw away a life to resolve a problem?" he asked. "Is it licit to hire a hitman to resolve a problem?"
Francis denounced decisions to abort based on prenatal testing, saying a human being is "never incompatible with life."
Even those babies destined to die at birth or soon thereafter deserve to receive medical care in the womb, Francis said, adding that their parents need to be supported so they don't feel isolated and afraid.
ALSO READ: See what stubborn husband did after company transferred wife to AmericaWhile one can argue about using medical resources this way, there is value to it for the parents, he said.
"Taking care of these children helps parents to grieve and not only think of it as a loss, but as a step on a path taken together," Francis said.
Francis has spoken out strongly against abortion but also has expressed sympathy for women who have had them and made it easier for them to be absolved of the sin of abortion.
His comments come as the abortion debate is again making headlines in the U.S. with state initiatives seeking to restrict the procedure.