This chapter proposes an alternative, non-adult-centered view of first-person authority, focusing on communication with pre-linguistic infants. It argues that when we engage in a communicative interaction where another person conveys their mental states to us, we are already within the realm of first-person authority. The chapter further explores the interdisciplinary question of the origins of communication in humans, integrating philosophical reflections with empirical research in developmental psychology. Research on early human communication shows that infants convey their mental states through typical communicative acts, which can be treated—or fail to be treated—with first-person authority.