This doctoral dissertation examines the interrelation between three aspects of Heraclitus’ thought: (1) his interest in perspectival or context-dependent conceptions of the opposites; (2) his views on the obstacles to and limitations of human (as contrasted with divine) knowledge; and (3) his conception of reality as a unity, along with the divergent kinds of unity that he associates with the divine and the human perspective. This dissertation argues that Heraclitus conceives of reality as an undifferentiated unity that can only be understood from a “perspectiveless” state. In other words, reality is such that it can only be grasped from a state unconditioned by the perceptual and cognitive features arising from one’s idiosyncratic “creaturely” constitution – especially one’s needs and values. This perspectiveless state also corresponds to the divine “perspective.” Heraclitus’ logos, this thesis argues, is a method for recognizing the underlying structure of human thought and discourse, and the view of reality that this structure yields. However, this method, when used consistently and globally, serves to undermine both the logos itself and the human perspective that it reflects. Through an analysis of Heraclitus’ perspective juxtapositions, this thesis shows that a full engagement with the logos’ method of evoking the unity of opposites allows the audience to achieve a (temporary) collapse of perspective and apprehension of reality as a unity free of oppositions and differentiations. By viewing Heraclitus’ statements concerning human knowledge in this light, we can resolve certain puzzles in Heraclitus’ conception of unity, his preoccupation with the perspectival (despite his rejection of the idiosyncratic) and his attitudes towards human knowledge. The unity of opposites, while not part of the nature of reality, plays an essential part in the common structure of human thought. By cleaving to this common structure, and by engaging fully with the conflicting perspectives which it brings together, and which are equally idiosyncratic with respect to the true nature of reality, the audience overcomes the limitations of the human perspective, and achieves a temporary apprehension of a reality which cannot be grasped from within its constraints.