Thrasymachus (fl. 427 B.C.E.) Thrasymachus of Chalcedon is one of several “older sophists” (including Antiphon, Critias, Hippias, Gorgias, and Protagoras) who became famous in Athens during the fifth century B.C.E. We know that Thrasymachus was born in Chalcedon, a colony of Megara in Bithynia, and that he had distinguished himself as a teacher of rhetoric and speechwriter in Athens by the year 427. Beyond this,

Gottfried Leibniz: Metaphysics The German rationalist philosopher, Gottfried Wilhelm Leibniz (1646-1716), is one of the great renaissance men of Western thought. He has made significant contributions in several fields spanning the intellectual landscape, including mathematics, physics, logic, ethics, and theology. Unlike many of his contemporaries of the modern period, Leibniz does not have a canonical work that stands as his single, comprehensive piece of philosophy. Instead,

Plotinus: Virtue Ethics This article focuses on the virtue ethics of Plotinus (204—270 C.E.) and its implications for later accounts of virtue ethics, particularly in Porphyry and Iamblichus. Plotinus’ ethical theory is discussed in relation to the aim of the virtuous person to become godlike, the role of disposition in the soul’s intellectualization, the four cardinal virtues, well-being, human freedom, and self-determination. Plotinus’ virtue ethics

Reduction and Emergence in Chemistry Most talk of reduction and emergence figures in discussions about the relation between different physical theories, or between physics and biology. The aim of this article is to present a different perspective through which to examine reduction and emergence; namely, the perspective of chemistry’s relation to physics. Very broadly, reduction is associated with the idea that the sciences are hierarchically

Stoicism Stoicism originated as a Hellenistic philosophy, founded in Athens by Zeno of Citium (modern day Cyprus), c. 300 B.C.E. It was influenced by Socrates and the Cynics, and it engaged in vigorous debates with the Skeptics, the Academics, and the Epicureans. The name comes from the Stoa Poikile, or painted porch, an open market in Athens where the original Stoics used to meet and teach

Ethnoepistemology As a species of naturalized epistemology, ethnoepistemology treats all human epistemological activities as fully natural phenomena to be described, understood, and evaluated from a broadly anthropological and fully a posteriori perspective. In this spirit it examines the entire gamut of human epistemological activities ranging from those of ordinary folk and cognitive specialists (for example, diviners, shamans, priests, magicians, and scientists) to those of epistemologists