Related:

• And yet the true creator is necessity, which is the mother of invention.
  -- Plato (428-348? B.C.), "The Republic", Book II. 369C...
• Astronomy compels the soul to look upwards and leads us from this world to another.
  -- Plato, The Republic. Book VII. 529...
• Do to others as I would they should do to me.
  -- Plato (428-348 BCE) "The Republic" Book XI, 913...
• Honesty is for the most part less profitable than dishonesty. -- Plato
• Bodily exercise, when compulsory, does no harm to the body
  but knowledge which is acquired under compulsion obtains no hold on the mind....
• Democracy, which is a charming form of government, full of variety and disorder, and dispensing a sort of equality to equals and unequals alike.
  -- Plato, The Republic. Book VIII. 558...
• In all of us, even in good men, there is a lawless wild-beast nature, which peers out in sleep.
  -- Plato (428-348 BCE) "The Republic" Book IX, 571d...
• The introduction of a new kind of music must be shunned as imperiling the whole state, for styles of music are never disturbed without affecting the most important political institutions.
  ... The new style, gradually gaining a lodgement, quitely insinuates itself into manners and customs, and from it ....
• What a poor appearance the tales of poets make when stripped of the colours which music puts upon them, and recited in simple prose.
  -- Plato, The Republic. Book X. 601B...