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The Pro-Life Argument from Substantial Identity: A Defence

Patrick Lee

Franciscan University of Steubenville

Bioethics, Vol. 18, No. 3, pp. 249-263, June 2004

This article defends the following argument: what makes you and I valuable so that it is wrong to kill us now is what we are (essentially). But we are essentially physical organisms, who, embryology reveals, came to be at conception/fertilisation. I reply to the objection to this argument (as found in Dean Stretton, Judith Thomson, and Jeffrey Reiman), which holds that we came to be at one time, but became valuable as a subject of rights only some time later, in virtue of an acquired characteristic. I argue against this position that the difference between a basic, natural capacity and some degree of development of such a capacity is a mere difference in degree, that this position logically implies the denial of equal personal dignity, and that the selection of the required degree of development of a capacity is necessarily arbitrary.

Number of Pages in PDF File: 15

Date posted: June 19, 2004  

Suggested Citation

Lee, Patrick, The Pro-Life Argument from Substantial Identity: A Defence. Bioethics, Vol. 18, No. 3, pp. 249-263, June 2004. Available at SSRN: http://ssrn.com/abstract=548046

Contact Information

Patrick Lee (Contact Author)
Franciscan University of Steubenville ( email )
Steubenville, OH 43952
United States
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