Philosophy I / The Milesians
Practice question · Fill in the blanks

Complete the account of Anaximander’s argument for the apeiron.

If the origin of everything were one of the observable elements, that element would long since have ______ its opposites. The origin must therefore be ______ of them, and Anaximander calls it the ______. This is the first argument in Western philosophy for something ______ on the grounds that the observable candidates fail.

Word bank: overwhelmed · none · apeiron · unobservable · water

Hints
  1. The argument is about what would have happened by now if one element were fundamental.
  2. Its conclusion is that the origin cannot be any familiar substance.
Show the answer

If the origin of everything were one of the observable elements, that element would long since have overwhelmed its opposites. The origin must therefore be none of them, and Anaximander calls it the apeiron. This is the first argument in Western philosophy for something unobservable on the grounds that the observable candidates fail.

Why

The argument is genuinely powerful: an unlimited quantity of one element would have swamped the rest long ago, so the origin must be indefinite. Positing an unobservable because the observables fail is a move science has repeated ever since.

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