 Impartiality is sometimes treated by philosophers as if it were equivalent to moral impartiality. Or, at the very least, the former word is often used, without the qualifying adjective ‘moral’, even when it is the particularly moral concept that is intended. This is misleading, since impartiality in its broadest sense is best understood as a formal notion, while moral impartiality in particular is a substantive concept – and one concerning which there is considerable dispute.