What is _Eikasia_?

This paper defends a reading of eikasia—the lowest kind of cognition in the Divided Line—as a kind of empirical cognition that Plato appeals to when explaining, among other things, the origin of ethical error. The paper has two central claims. First, eikasia with respect to, for example, goodness or justice is not different in kind to eikasia with respect to purely sensory images like shadows and reflections: the only difference is that in the first case the sensory images include representations of value properties. Second, eikasia is not the bare awareness of images or simply a label for an error (mistaking image for original) but a kind of empirical, image-confined cognition, and one that has an important part to play in characterising the cognitive abilities of the non-rational parts of the soul.