The physician Herophilus of Chalcedon, who lived and worked in Alexandria in the early third centuryb.c., is best known and justly celebrated for his numerous and ground-breaking anatomical discoveries and advances in such areas as pulse theory. His systematic investigations into the human body led to some of the highest achievements of Hellenistic science, among which the best known is probably his discovery and detailed description of the nervous system and its functions. Yet certain aspects of his thought have seemed (...) difficult to harmonize with the aims and methods of his medical research. One such is his attitude to causality. According to Galen, Herophilus had accepted the existence of causes merely on a hypothetical basis, and indeed had made the striking claim that ‘by nature it is not discoverable whether causes do or do not exist’. Galen associates these views directly with a number of arguments designed to prove that there are no such things as causes, but we are otherwise left with little in the way of context, and different interpretations have unsurprisingly suggested themselves. (shrink)

Abstract This paper examines a fundamental, though relatively understudied, aspect of the physical theory of the physician Asclepiades of Bithynia, namely his doctrine of pores. My principal thesis is that this doctrine is dependent on a conception of void taken directly from Epicurean physics. The paper falls into two parts: the first half addresses the evidence for the presence of void in Asclepiades' theory, and concludes that his conception of void was basically that of Epicurus; the second half focuses on (...) the precise nature of Asclepiadean pores, and seeks to show that they represent void interstices between the primary particles of matter which are the constituents of the human body, and are thus exactly analogous to the void interstices between atoms within solid objects in Epicurus' theory. (shrink)

Athenaeus of Attaleia (fl. mid-first century BC) offers a fascinating example of the interest among Graeco-Roman physicians in marking out the boundaries between medicine and philosophy. As founder of the so-called Pneumatist medical sect, he was deeply influenced by contemporary Stoicism. A number of surviving ancient testimonia tell us that he held a distinctive view on the question of how far medicine should analyse the composition of the human body. Rather than having recourse to the Stoic cosmic elements fire, air, (...) earth and water, he maintained that in the context of the medical art, the relevant elements were the elemental qualities hot, cold, wet and dry. This paper is an attempt to pin down Athenaeus’ position on these issues, and his motivations for holding it, despite a number of conflicting and problematic claims in the surviving evidence. (shrink)

The medical and philosophical system of Asclepiades of Bithynia ( fl. later second century BC) has been the subject of considerable controversy. His physical theory of anarmoi onkoi in particular has seen intense debate, and although many of its broader features appear to be fairly well established, many of its most fundamental details remain obscure. Perhaps somewhat paradoxically, some of the most important work carried out on Asclepiades has been explicitly focused instead on Heraclides of Pontus, the reconstruction of whose (...) physical theory has often proceeded on the assumption that this was largely replicated by Asclepiades some two centuries later. (shrink)

This paper argues that the Alexandrian physicians Erasistratus of Iulis and Herophilus of Chalcedon adopted an Aristotelian analysis of the composition of organic bodies into three levels, namely elements, uniform and non-uniform parts. They asserted that it was not the task of the doctor to analyse the body at the level of elements, that the uniform parts, being perceptible, should be taken to be most basic in the context of medicine and that the inquiry into the elements be left to (...) philosophers. The paper explores the possible motivations behind this restriction, and considers more generally its connections to the Peripatetic background. (shrink)

Journal Name: Apeiron Issue: Ahead of print.

This volume explores the versatility of the concept of pneuma in philosophical and medical theories in the wake of Aristotle’s physics. It offers fourteen separate studies of how the concept of pneuma was used in a range of physical, physiological, psychological, cosmological and ethical inquiries. The focus is on individual thinkers or traditions and the specific questions they sought to address, including early Peripatetic sources, the Stoics, the major Hellenistic medical traditions, Galen, as well as Proclus in Late Antiquity and (...) John Zacharias Aktouarios in the early 14th century. Building on new scholarly approaches and on recent advancements in our understanding of Graeco-Roman philosophy and medicine, the volume prompts a profound re-evaluation of this fluid and adaptable, but crucially important, substance, in antiquity and beyond. (shrink)