Protagoras was a pre-Socratic Greek philosopher and rhetorical theorist. He is numbered as one of the sophists by Plato. In his dialogue Protagoras, Plato credits him with inventing the role of the professional sophist. Protagoras also is believed to have created a major controversy during ancient times through his statement that, "Man is the measure of all things", interpreted by Plato to mean that there is no objective truth. Whatever individuals deem to be the truth, is true. This concept of individual relativity was atypical for the time, contrasting with both popular opinion and other philosophical doctrine that reality and its truth must have an objective grounding.
Plato
Plato was an ancient Greek philosopher and the founder of the Academy in Athens, the first institution of higher learning in the Western world. His most notable works include "The Republic," "Symposium," and "Phaedo." Plato's dialogues are written in the form of conversations between Socrates and other characters, exploring themes such as ethics, politics, and metaphysics.
Plato's influence on literature is profound, as his philosophical ideas have inspired countless writers and thinkers throughout history. His most famous work, "The Republic," is a seminal text in political philosophy and has had a lasting impact on the genre. Plato's literary style is characterized by its use of dialogue, dialectic, and allegory, making his works both engaging and thought-provoking.