No matter what criticism one brings against their book or its argument, one must admit that Feser and Bessette make their argument clear. On page 52, they offer an overview of their philosophical argument for the moral legitimacy of the death penalty. Notice that steps 4, 5, and 6 form a syllogism:
- Wrongdoers deserve punishment.
- The graver the wrongdoing, the severer is the punishment deserved.
- Some crimes are so grave that no punishment less than death would be proportionate in its severity.
- Therefore, wrongdoers guilty of such crimes deserve death.
- Public authorities have the right, in principle, to inflict on wrongdoers the punishments they deserve.
- Therefore, public authorities have the right, in principle, to inflict the death penalty on those guilty of the gravest offenses.