"One alteration—one improvement—of your choice, applied to the genome of the fertilized ovum that will grow into your child. And your child only . You cannot force it on any of the others. So, Camila, if you think it would improve the human race to get rid of its aggression, why then, I will search through the scientific literature for a way to reach toward your goal genetically. And likewise for the rest of you, and whatever changes you happen to think will improve the human condition. Your child, your choice."