Ideas from 'Truth (frags)' by Protagoras [441 BCE], by Theme Structure

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13. Knowledge Criteria / E. Relativism / 1. Relativism
Man is the measure of all things - of things that are, and of things that are not
13. Knowledge Criteria / E. Relativism / 6. Relativism Critique
Not every person is the measure of all things, but only wise people [Plato]
Why didn't Protagoras begin by saying "a tadpole is the measure of all things"? [Plato]