Aristotle

Rhetoric may be defined as the faculty of observing in any given case the available means of persuasion. This is not a function of any other art.

It is Homer who has chiefly taught other poets the art of telling lies skillfully.

Personal beauty is a greater recommendation than any letter of reference.

Suffering becomes beautiful when anyone bears great calamities with cheerfulness, not through insensibility but through greatness of mind.

You will never do anything in this world without courage. It is the greatest quality of the mind next to honor.

The least initial deviation from the truth is multiplied later a thousandfold.

Piety requires us to honor truth above our friends.

Plato is dear to me, but dearer still is truth.

The generality of men are naturally apt to be swayed by fear rather than reverence, and to refrain from evil rather because of the punishment that it brings than because of its own foulness.

Men are swayed more by fear than by reverence.

Courage is a mean with regard to fear and confidence.

I have gained this from philosophy: that I do without being commanded what others do only from fear of the law.

To attain any assured knowledge about the soul is one of the most difficult things in the world.

He who is unable to live in society, or who has no need because he is sufficient for himself, must be either a beast or a god.

Whosoever is delighted in solitude is either a wild beast or a god.

A tyrant must put on the appearance of uncommon devotion to religion. Subjects are less apprehensive of illegal treatment from a ruler whom they consider god-fearing and pious. On the other hand, they do less easily move against him, believing that he has the gods on his side.

It is just that we should be grateful, not only to those with whose views we may agree, but also to those who have expressed more superficial views; for these also contributed something, by developing before us the powers of thought.

What it lies in our power to do, it lies in our power not to do.