Work

Fragments & Testimonies

Protagoras·Greek·fragmentary

About this text

Almost nothing survives directly. The two most famous sentences in the history of philosophy are attributed to him, preserved by Plato and Sextus Empiricus.

Man is the measure of all things: of things that are, that they are, and of things that are not, that they are not.

Concerning the gods I am unable to discover whether they exist or not, or what they are like in form. There are many things that stand in the way: the obscurity of the subject and the shortness of human life.

Full text not yet available.