ndividuals is perhaps the central question of hu-Рman life: What, exactly, is my individuality? To what degree isРit municable or unique? To what degree can it be shared,Рand how? If fundamental particles have lost their individuality,Рone wonders what this may imply for us. Yet this human ques-Рtioning must respect the aspects of nature that go beyond theРhuman.Р My goal is to bring these questions to life and to open themРto broad consideration, so that they might begin a thoughtfulРconversation among many people, not just those already versedРin physics or philosophy. To do so, I have omitted many impor-Рtant aspects, and I have not tried to offer plete accountРof all the issues at stake. Because of this, I have not done justiceРto many worthy thinkers, ancient and modern, who have spo-