Adams's suggestion that there must be one really right way of presenting the history of moral philosophy seems implausible to me, so I reject – with additional reasons – his charges against the structure of Invention of Autonomy. Skorupski's way of stating the ‘equal moral abilities’ thesis is not, I argue, very Kantian; a more Kantian version is not open to his objections. I am unconvinced by Schultz's claim that Sidgwick did not really hold that thesis. Deigh raises questions I cannot reply to here, but I do offer some texts that seem to show that Sidgwick is not guilty of the confusion about ‘ought’ with which Deigh charges him.