Justice means minding one's own business and not meddling with other men's concerns.

Until philosophers hold power, neither states nor individuals will have rest from trouble.

The true lover of knowledge naturally strives for truth, and is not content with common opinion, but soars with undimmed and unwearied passion till he grasps the essential nature of things.

The democratic youth lives along day by day, gratifying the desire that occurs to him, at one time drinking and listening to the flute, at another downing water and reducing, now practicing gymnastic, and again idling and neglecting everything; and sometimes spending his time as though he were occupied in philosophy.

It is right to give every man his due.

Opinion is the medium between knowledge and ignorance.

.. we shall not be properly educated ourselves, nor will the guardians whom we are training, until we can recognise the qualities of discipline, courage, generosity, greatness of mind, and others akin to them, as well as their opposites in all their manifestations.