Related:

• Do to others as I would they should do to me.
  -- Plato (428-348 BCE) "The Republic" Book XI, 913...
• Regrets and complaints about relations are to be attributed to the same cause, which is not old age, but men's characters and tempe
  for he who is of a calm and happy nature will hardly feel the pressure of age, but for someone with the opposite deposition, youth and old age are equally a burden....
• Astronomy compels the soul to look upwards and leads us from this world to another.
  -- Plato, The Republic. Book VII. 529...
• And yet the true creator is necessity, which is the mother of invention.
  -- Plato (428-348? B.C.), "The Republic", Book II. 369C...
• No one has died an atheist. -- Plato (428-348 BCE) "The Republic" Bk. X, 888
• 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...
• The beginning is the most important part of the work. -- Plato, The Republic. Book II. 377B
• 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...