[Aristotle] was the most eminent of all the pupils of Plato.... He seceded from Plato while he was still alive; so that they tell a story that [Plato] said, " Aristotle has kicked us off, just as chickens do their mother after they have been hatched.
Until philosophers are kings, or the kings and princes of this world have the spirit and power of philosophy, and political greatness and wisdom meet in one, and those commoner natures who pursue either to the exclusion of the other are compelled to stand aside, cities will never have rest from their evils - no, nor the human race, as I believe - and then only will this our State have a possibility of life and behold the light of day.
If the study of all these sciences which we have enumerated, should ever bring us to their mutual association and relationship, and teach us the nature of the ties which bind them together, I believe that the diligent treatment of them will forward the objects which we have in view, and that the labor, which otherwise would be fruitless, will be well bestowed.
Society is an illusion to the young citizen. It lies before him in rigid repose, with certain names, men, and institutions, rootedlike oak-trees to the centre, round which all arrange themselves the best they can. But the old statesman knows that society is fluid; there are no such roots and centres; but any particle may suddenly become the centre of the movement, and compel the system to gyrate round it, as every man of strong will, like Pisistratus, or Cromwell, does for a time, and every man of truth, like Plato, or Paul, does forever.
It seems that I must bid the Muse to pack, / Choose Plato and Plotinus for a friend / Until imagination, ear and eye, / Can be content with argument and deal / In abstract things; or be derided by / A sort of battered kettle at the heel.
Those who intend on becoming great should love neither themselves or their own things, but only what is just, whether it happens to be done by themselves or others.