Related:

• That virtue was sufficient of herself for happiness.
  -- Diogenes Laertius (c. 200 AD) -- Plato, xlii...
• When Zeno was asked what a friend was, he replied, "Another I.
  -- Diogenes Laertius (c. 200 AD) -- Zeno, xix...
• They say that the first inclination which an animal has is to protect itself.
  -- Diogenes Laertius (c. 200 AD) -- Zeno, lii...
• Asked what he gained from philosophy, he answered, "To do without being commanded what others do from fear of the laws.
  -- Diogenes Laertius (c. 200 AD) -- Aristotle, xi...
• It was a common saying of Myson that men ought not to investigate things from words, but words from thing
  for that things are not made for the sake of words, but words for things....
• The chief good he has defined to be the exercise of virtue in a perfect life.
  -- Diogenes Laertius (c. 200 AD) -- Aristotle, xiii...
• But Chrysippus, Posidonius, Zeno, and Boethus say, that all things are produced by fate.
  And fate is a connected cause of existing things, or the reason according to which the world is regulated....
• Nothing can be produced out of nothing. -- Diogenes Laertius (c.
  200 AD) -- Diogenes of Apollonia, ii...
• One of the sayings of Diogenes was that most men were within a finger's breadth of being mad
  for if a man walked with his middle finger pointing out, folks would think him mad, but not so if it were his forefinger....