The argument of this book is that there is no one approach to the ethics of history making and that Aristotle’s view of ethics as practical and imprecise means that there are ethics of histories still to come. Taking a larger-scale view than that normally afforded by focusing on the responsibility of history makers towards those in the past, this chapter argues that professional codes of conduct and ethics frameworks need to strengthen their appreciation of ethos: the effort of ethics being of our own making, in and across time and space, singular and plural and as never finished.