Not to know of what things one should demand demonstration, and of what one should not, argues want of education.

-Aristotle
Aristotle

In [the soul] one part naturally rules, and the other is subject, and the virtue of the ruler we maintain to be different from that of the subject; the one being the virtue of the rational, and the other of the irrational part. Now, it is obvious that the same principle applies generally, and therefore almost all things rule and are ruled according to nature.

Aristotle
For knowing is spoken of in three ways: it may be either universal knowledge or knowledge proper to the matter in hand or actualising such knowledge; consequently three kinds of error also are possible.
Aristotle

There must be in prudence also some master virtue.

Aristotle
The only stable state is the one in which all men are equal before the law.
Aristotle

Of old, the demagogue was also a general, and then democracies changed into tyrannies. Most of the ancient tyrants were originally demagogues. They are not so now, but they were then; and the reason is that they were generals and not orators, for oratory had not yet come into fashion.

Aristotle
Emotions of any kind can be evoked by melody and rhythm; therefore music has the power to form character.
Aristotle

No democracy can exist unless each of its citizens is as capable of outrage at injustice to another as he is of outrage at unjustice to himself.

Aristotle
Greatness of spirit is to bear finely both good fourtune and bad, honor and disgrace, and not to think highly of luxury or attention or power or victories in contests, and to possess a certain depth and magnitude of spirit.
Aristotle

The ideal man takes joy in doing favors for others.

Aristotle
Finally, if nothing can be truly asserted, even the following claim would be false, the claim that there is no true assertion.