Abstract
Many caregivers feel that they need to lie or withhold the truth from people living with dementia, but worry that, in doing so, they are violating a duty to tell the truth. In this article, I argue that withholding the truth from and, in limited circumstances, lying to people living with dementia is not only morally permissible, but morally required by a more general requirement that we treat each other as persons worthy of respect. I do so through an analysis of the groundings of the duty to tell the truth, and a critical reflection on its cognitively ableist construction.