Quotes from Protagoras

Man is the measure of all things.

There are two sides to every question.

As to the gods, I have no means of knowing either that they exist or do not exist.

Many things prevent knowledge, including the obscurity of the subject and the brevity of human life

As touching the gods, I do not know whether they exist or not, nor how they are featured; for there is much to prevent our knowing: the obscurity of the subject and the brevity of human life.

Let us hold our discussion together in our own persons, making trial of the truth and of ourselves.

There are two sides to every question.

As to gods, I have no way of knowing either that they exist or do not exist, or what they are like.

The Athenians are right to accept advice from anyone, since it is incumbent on everyone to share in that sort of excellence, or else there can be no city at all.

Man is the measure of all things.

No intelligent man believes that anybody ever willingly errs or willingly does base and evil deeds; they are well aware that all who do base and evil things do them unwillingly.

Man is the measure of all things, of the reality of those which are, and of the unreality of those which are not.