True happiness comes from gaining insight and growing into your best possible self. Otherwise all you're having is immediate gratification pleasure, which is fleeting and doesn't grow you as a person.

It is not always the same thing to be a good man and a good citizen.

Happiness depends upon ourselves.

Happiness is a state of activity.

Men agree that justice in the abstract is proportion, but they differ in that some think that if they are equal in any respect they are equal absolutely, others that if they are unequal in any respect they should be unequal in all. The only stable principle of government is equality according to proportion, and for every man to enjoy his own.

Between friends there is no need for justice, but people who are just still need the quality of friendship; and indeed friendliness is considered to be justice in the fullest sense.

Xenophanes states that the fire in Lipara once failed for sixteen years, but returned in the seventeenth year. They say that the lava-stream in Etna is neither flaming nor continuous, but returns only after an interval of many years.