  Since moral perceptions operate in the way our visual perceptions operate, Reid is able to claim that we can morally perceive things like duty, even though duty, like visible figure, is a relational property. He says that “Duty, or Moral Obligation” is strictly speaking neither a quality of an action nor a quality of an agent “but a certain relation between the one and the other. ... So that, if we seek the place of a moral obligation among the categories, it belongs to the category of relation” (EAP 3.3.5, 173). Though the object of my tactile perceptions is a primary quality in a mind independent object, the object of my perception of a visible figure is a relation between the mind-independent object and my eyes. In this limited way, the perception of duty resembles the perception of visible figures. Importantly, though, visible figures are themselves mind-independent, in just the way that duty is also mind-independent. Were someone else's eyes placed in the same location as mine are, she too would visually perceive just the visible figure I perceived. This intersubjectivity is important for grounding Reid's claims about the perception of duty.