Skip to content

Heraclitus

Ephesus · c. 500 BCE · Flux

“What does Heraclitus mean?”

The Greek thinker who argued that change is not what happens to reality but what reality is.

Overview

Heraclitus wrote in short, deliberately compressed statements. Only fragments survive, quoted by later writers who often disagreed about what he meant.

The famous line about not stepping into the same river twice is a claim about identity: the river is a river because it is changing.

Perspectives

There is no single answer here. Each reading comes from a different tradition and should be judged in its own terms.

Flux

Stability is a pattern maintained by change, not the absence of it. A flame keeps its shape by burning.

Unity of opposites

The road up and the road down are the same road. Opposites are aspects of one structure rather than separate things.

Logos

There is an ordering account behind the flux, and most people live according to it while remaining unaware of it.

Claims

1 of 1 carry a source · 100%

Each statement is held separately, with what supports it and how firmly.

Nothing of Heraclitus' book survives whole; he is read entirely through fragments quoted by later writers.

Documented

The standard critical collection assembles him from quotations in other authors.

  • Die Fragmente der Vorsokratiker — Hermann Diels and Walther Kranz · 1903, revised 1952

Related ideas

Cited sources

  • Die Fragmente der Vorsokratiker — Hermann Diels and Walther Kranz · 1903, revised 1952

    Standard collection of the surviving Heraclitus fragments; nothing of his book survives whole.

Sources

This entry still needs sources. It is marked as needing evidence rather than presented as settled.

Spotted an error, or know a better source? Tell us.