The saying of Protagoras is like the views we have mentioned; he said that man is the measure of all things, meaning simply that that which seems to each man assuredly is. If this is so, it follows that the same thing both is and is not, and is bad and good, and that the contents of all other opposite statements are true, because often a particular thing appears beautiful to some and ugly to others, and that which appears to each man is the measure

And this lies in the nature of things: What people are potentially is revealed in actuality by what they produce.

Men are divided between those who are as thrifty as if they would live forever, and those who are as extravagant as if they were going to die the next day.

.. for desire is like a wild beast, and anger perverts rulers and the very best of men. Hence law is intelligence without appetition.

The perversions are as follows: of royalty, tyranny; of aristocracy, oligarchy; of constitutional government, democracy.

Anything whose presence or absence makes no discernible difference is no essential part of the whole.

Dissimilarity of habit tends more than anything to destroy affection.