The avarice of mankind is insatiable.

A friend to all is a friend to none.

Cruel is the strife of brothers.

Happiness is a quality of the soul…not a function of one's material circumstances.

Poverty is the parent of revolution and crime.

Where the needs of the world and your talents cross, there lies your vocation.

Youth should stay away from all evil, especially things that produce wickedness and ill-will.

Goodness is to do good to the deserving and love the good and hate the wicked, and not to be eager to inflict punishment or take vengeance, but to be gracious and kindly and forgiving.

Money was established for exchange, but interest causes it to be reproduced by itself. Therefore this way of earning money is greatly in conflict with the natural law.

And it is characteristic of man that he alone has any sense of good and evil, of just and unjust, and the like, and the association of living beings who have this sense makes family and a state.

Some believe it to be just friends wanting, as if to be healthy enough to wish health.

In constructing the plot and working it out with the proper diction, the poet should place the scene, as far as possible, before his eyes. In this way, seeing everything with the utmost vividness, as if he were a spectator of the action, he will discover what is in keeping with it, and be most unlikely to overlook inconsistencies.

Such an event is probable in Agathon's sense of the word: 'it is probable,' he says, 'that many things should happen contrary to probability.'

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

Friendship is two souls inhabiting one body.

Knowing yourself is the beginning of all wisdom.

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It was through the feeling of wonder that men now and at first began to philosophize.

Nature does nothing in vain.

Law is mind without reason.