During the previous years, voluntary moral bioenhancement (VMBE) has been contrasted to compulsory moral bioenhancement (CMBE). In this paper a third possible type of moral bioenhancement is discussed: genome editing for moral enhancement of the unborn that is neither voluntary nor compulsory, but involuntary. Involuntary moral bioenhancement (IMBE) might engineer people who will be more moral than they otherwise would have been. The possibilities of genome editing aimed at moral enhancement of our offspring is assessed. It is argued that genome editing might have the potential to engineer our offspring in three domains: to be more empathetic, to be less violently aggressive, and to have a higher potential for complex moral reflection. Genome editing is discussed in these three domains, and a proposal made that a combination of VMBE and IMBE might be the best option humans have to become better.

This article continues and expands differences I have with Ingmar Persson and Julian Savulescu concerning issues of moral bioenhancement and free will. They have criticized my conception of voluntary moral bioenhancement, claiming that it ignores the extent to which freedom is a matter of degree. Here, I argue that freedom as a political concept (or as one that is analogous to a political concept) is indeed scalar in nature, but that freedom of the will is to be understood as a threshold concept and therefore not as subject to degree. Consequently, I contend, by asserting that freedom is a matter of degree, that Persson and Savulescu have not undermined my arguments favoring voluntary moral enhancement. In addition, I add three further arguments against compulsory moral bioenhancement.