Personhood:

Mary Anne Warren on abortion:

“On the Moral and Legal Status of Abortion”;

John Locke..

If X is not a person, then X is permissible to kill or DESTROY. ???

Don Marquis:

“Why Abortion is Immoral”

• Fetuses are not persons. But killing fetuses is PF wrong nevertheless.

It is prima facie wrong to kill me because:

• Killing us deprives us of our valuable futures. 
•  

Any action that deprives us of our valuable futures is prima facie wrong.

Abortion deprives fetuses of their valuable futures.

So, just like it’s wrong to kill us,

it’s wrong to kill fetuses.

Therefore, abortion is PF wrong.

Thompson: see below