Perhaps the greatest determinant of individual and societal welfare is who raises children and with what degree of discretion. Philosophers have endeavored in myriad ways to provide normative justification for ascribing a right to be a legal parent and to possess particular legal powers as a parent. This Article shows why they fail and offers an alternative theoretical framework for delimiting parental rights. The prevailing tendency in philosophical writing on the topic is to begin with observations and intuitions specific to parent-child relationships. Against that tendency, this Article demonstrates the need to begin with principles at a high level of generality, covering a broad range of human relationships. This yields a much more limited moral right in connection with parenthood than do accounts that fail to generalize.