In the following essay, Wiggins explores the context and meaning of Heraclitean theories of flux, fire, and material persistence, arguing that Heraclitus developed these concepts as a response to the natural philosophy of the Milesian thinkers Anaximander, Anaximenes, and Thales.

In the following excerpt, Kahn offers a survey of Heraclitus 's historical and intellectual context, paying particular attention to the philosopher's links with Ionian natural philosophy. Kahn maintains that Heraclitus 's "real subject is not the physical world but the human condition, the condition of mortality."

In the following excerpt, Hussey examines several rules for the interpretation of sense-experience which he contends Heraclitus followed. The editors have included only those footnotes which pertain to the excerpt.

In the following excerpt, Hussey provides an overview of Heraclitus 's thought, particularly his concept of logos, and contends that the point of many of his paradoxical writings was to offer analogies.

In the following excerpt, Fuller provides an overview of Heraclitus 's philosophical theories, focusing in particular on the doctrines of flux and wisdom.

In the essay below, Scholfield explores Heraclitus's conception of the soul and psychology, concluding that the philosopher held the soul to be, like the universe itself, "a physical substance subject to the unity of opposites and to opposite sequences of transformations."

In the following excerpt originally published in 1939, Gomperz examines the Heraclitean concepts of the Cosmos, Fire, Becoming, and Change, remarking upon problems with commonly assumed views of his major tenets.

In the following essay, originally written in French and published in 1973, Beaufret argues that both the philosophy of Heraclitus and that of Parmenides are concerned with change and permanence and are not as opposed to each other as is commonly believed.

In the following excerpt from an essay originally published in 1951, Kirk examines Heraclitus's doctrine of change, contending that it emphasizes the order and regularity of change and not, as has been claimed, a universal and constant change.