Man is by nature a political animal.

In all things of nature there is something of the marvelous.

All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion, desire.

If one way be better than another, that you may be sure is nature's way.

Nature does nothing in vain.

We make war that we may live in peace.

The ultimate value of life depends upon awareness and the power of contemplation rather than upon mere survival.

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

In a democracy the poor will have more power than the rich, because there are more of them, and the will of the majority is supreme.

Democracy is when the indigent, and not the men of property, are the rulers.

Persuasion is achieved by the speaker's personal character when the speech is so spoken as to make us think him credible. We believe good men more fully and more readily than others: this is true generally whatever the question is, and absolutely true where exact certainty is impossible and opinions are divided.

Bad men are full of repentance.

It is unbecoming for young men to utter maxims.

Men create gods after their own image, not only with regard to their form but with regard to their mode of life.

For though we love both the truth and our friends, piety requires us to honor the truth first.

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

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

Piety requires us to honor truth above our friends.

The true and the approximately true are apprehended by the same faculty; it may also be noted that men have a sufficient natural instinct for what is true, and usually do arrive at the truth. Hence the man who makes a good guess at truth is likely to make a good guess at probabilities.

Pleasure in the job puts perfection in the work.

The end of labor is to gain leisure.

Hope is a waking dream.

Youth is easily deceived because it is quick to hope.

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

The secret to humor is surprise.

The energy of the mind is the essence of life.