_Brill's Companion to the Reception of Presocratic Natural Philosophy in Later Classical Thought_ explores both explicit and hidden influences of Presocratic early scientific concepts, such as nature, elements, principles, soul, organization, causation, purpose, and cosmos in Platonic, Aristotelian, and Hippocratic philosophy.

In a world of expanding epistemological horizons, the Early Greek thinkers known as the Presocratics wrestled with questions concerning the nature of things. But this idea of φύσις as a way to say what things really are was a relatively new one and meant that these thinkers often articulated very different ideas about how to properly under this philosophical concept. In this paper I sketch Heraclitus’s understanding of φύσις as a riddle that demands a particular method of inquiry. Linking many (...) of his fragments, I show that φύσις is a paradoxical harmonia, or “fitting-together,” of opposites that serves as the pattern which underlies all things. Understood in this way, Heraclitus’s frequently mysterious fragments serve as a training ground for building wisdom by testing the listener’s ability to navigate ambiguity and complexity to find hidden meaning. Ultimately for Heraclitus, successfully navigating the riddle of φύσις moves us beyond simply saying “what things are” and unlocks our access to λόγος, or the principle according to which all things are steered or guided. (shrink)

This paper examines the relationship between justice and nature in key figures in early Greek philosophy in order to understand the idea of nature that grounds Plato’s account of justice. Tracing the idea of justice through Anaximander, Heraclitus, and Parmenides, I show that each figure uses justice in unique and innovative ways to explain different concepts of nature. Among the Presocratics then, justice is a heuristic for grasping the newly emerging and evolving concept of nature. It is in turn this (...) evolving concept of nature that ushers in the transformation of justice from the conventional Hesiodic notion of “legal settlement” or “paying one’s debts” to Plato’s philosophical account of justice based on nature. The transformation is marked by the development of several key epistemological criteria and teleological facets in the earliest concepts of nature. As such, Plato’s account of justice in the Republic is deeply indebted to Presocratic conceptions of justice and nature. (shrink)