(c. 481 B.C. - c. 411 B.C.)
Science Quotes by Protagoras (2 quotes)
Concerning the gods, I have no means of knowing either that they exist or that they do not exist, nor what sort of form they may have; there are many reasons why knowledge on this subject is not possible, owing to the lack of evidence and the shortness of human life.
Man is the measure of all things.
Quotes by others about Protagoras (1)
Note the saying of Protagoras that man is the measure of things. With the senses man measures perceptible things, with the intellect he measures intelligible things, and he attains unto supra-intelligible things transcendently