There should exist among the citizens neither extreme poverty nor again excessive wealth, for both are productive of great evil.

I know not how I may seem to others, but to myself I am but a small child wandering upon the vast shores of knowledge, every now and then finding a small bright pebble to content myself with

If there is no contradictory impression, there is nothing to awaken reflection

And is it not true that in like manner a leader of the people who, getting control of a docile mob, does not withhold his hand from the shedding of tribal blood, but by the customary unjust accusations brings a citizen into court and assassinates him, blotting out a human life, and with unhallowed tongue and lips that have tasted kindred blood, banishes and slays and hints at the abolition of debts and the partition of lands.

Science is nothing but perception.

Let no-one ignorant of geometry enter. Said to have been inscribed above the door of Plato's Academy.

To honor with hymns and panegyrics those who are still alive is not safe; a man should run his course and make a fair ending, and then we will praise him; and let praise be given equally to women as well as men who have been distinguished in virtue.