ABSTRACT
Biotechnology is the art of manipulating living forms as though they were machines. We have been manipulating, and transforming, living forms since we adopted pastoralist ways—by breeding, domestication, training—but it is only recently that anyone has supposed that we could alter outward forms or behaviour by interfering with the inner mechanisms, the mechanical, biochemical and genetic processes that sustain outward shapes and motions. In the past we could do little more than select parents with desirable characteristics in the hope that they would engender what we wanted, and—once the offspring were there—punish or cajole them to do what we wanted. Biotechnology offers the hope that we could achieve a more secure result by altering the biochemical base on which the characters we desire are founded. It is not clear whether, once the possibility is realized, we could retain our present conceptions of human life. If we could engineer saints, heroes, savants, slaves or psychopaths to order, would any of us be human any more?2
