Heraclitean School

The claim

All things flow. What holds the world together is not a stable substance but a measure — the logos — according to which opposites turn into one another.

What it held

Heraclitus wrote in short, deliberately difficult sentences and was called the Obscure for it. The difficulty is not decoration: he thought most people go through life asleep, hearing the logos and not understanding it, and he wrote in a way that refuses to be skimmed.

The famous claim is that you cannot step into the same river twice. The point is not that everything is chaos — it is the opposite. The river is only a river because the water keeps moving; the stability is the process. Fire is his image for this, since a flame keeps its shape precisely by consuming and replacing what it is made of.

Opposites, on this view, are not enemies but the two ends of one thing. The road up and the road down are the same road. Sea water is life to fish and death to men. Health only means anything against illness. The unity of the world is a unity of tension, like a strung bow, which holds because it is being pulled two ways at once.

How it argued

Aphorism and paradox, arranged so the reader has to do the work. He seems to have deposited his book in the temple of Artemis rather than reciting it, which suits the method.

What it was arguing against

Anyone who thinks learning many things is the same as understanding — he names Hesiod, Pythagoras and Xenophanes together on that charge. Also the Milesian search for a stable underlying stuff.

Where it disagreed with itself

How radical the flux is. Cratylus is said to have concluded you cannot step into the same river even once, and gave up speaking in favour of pointing — which Aristotle treats as a reductio of the position rather than a development of it.

Common misconceptions

That he taught everything is chaos and nothing can be known. He insists there is a logos, that it is public, and that it can be understood — his complaint is that people do not attend to it. And 'everything flows' is not a surviving quotation; it is Plato's summary.

How it began

An aristocrat of Ephesus who is said to have resigned his hereditary office to his brother. The contempt for the many that runs through the fragments reads like a man who could have governed and chose not to.

What became of it

No school in the institutional sense. Cratylus taught the position at Athens and Plato heard it, which is how it reaches everything after.

Lasting influence

The Stoic logos is his. Hegel said there was no proposition of Heraclitus he had not taken into his own logic. Nietzsche regarded him as the one Greek who got it right.

Why it still matters

Process metaphysics, in Whitehead and after, is the same claim made with modern equipment: that events rather than substances are what there is.

Put another way

A flame, which keeps its shape only by never being made of the same thing twice.

Where to start

Kahn. The fragments alone will not open without help, and pretending otherwise wastes a good afternoon.

The surprising bit

About a hundred fragments survive and almost all of them come to us because later writers quoted them to disagree. The book itself was lost early.

In their own words

Connections

Answers

Milesian School

Opposed by

Eleatic School

Influenced

Early Stoicism

The verdict

The hardest of the early Greeks and the one most often reduced to a slogan he never wrote.

Sources

• Stanford Encyclopedia of Philosophy