Abstract: In this chapter, I present a novel argument for optimism about moral testimony, the view that it is permissible to rely on moral testimony when forming one’s moral beliefs. The argument is simple: it is permissible to rely on one’s own moral beliefs formed in the past even if the underlying reasons for the belief are no longer accessible to the agent. But there is no (relevant) difference between relying on one’s past self and other agents – or if there is, it cuts the wrong way. Recognising that reliance on intrapersonal moral testimony is permissible should thus lead us to conclude that reliance on interpersonal moral testimony is likewise permissible. I explore some consequences for both optimism and pessimism about moral testimony following these considerations and argue that the discussion opens up the possibility for a more nuanced optimism about moral testimony.