Why Is Protagoras So Famous?

Protagoras, (born c. 490 bce, Abdera, Greece—died c. 420), thinker and teacher, the first and most famous of the Greek Sophists

. ... He acquired great wealth and reputation from his teaching, prompting his appointment as lawgiver for the Athenian colony of Thurii in Italy.

What are those position of Protagoras?

Protagoras is known primarily for three claims (1) that man is the measure of all things (which is often interpreted as a sort of radical relativism) (2) that he could make the “worse (or weaker) argument appear the better (or stronger)” and (3) that one could not tell if the gods existed or not.

Who taught Protagoras?

This confirms that he was one of the earliest sophists and suggests the 490s BCE as his birth year. According to an anecdote in Diogenes Laertius (IX. 53) he was a porter until Democritus taught him.