The absence of a single term, in Greek, that corresponds to the English term ‘consciousness’ is not a sign that the Greeks lacked the concept of consciousness, or were uninterested in the phenomena of consciousness. Plotinus employs four terms to refer to cognitive activities that fall under the extension of consciousness - antilêpsis, parakolouthêsis, sunaisthêsis, and sunesis. Each of these terms expresses a different mode of consciousness, and in many places, could be directly translated as ‘consciousness’. However, to avoid blurring distinctions between these different modes of consciousness and to project the fewest modern presuppositions on Plotinus’ theory, I propose a translation scheme that I adhere to throughout the core chapters on consciousness. Moreover, I offer a summary of how Plotinus uses the terms based on my analysis of consciousness in the core chapters and in the Appendix.