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• 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....
• When Zeno was asked what a friend was, he replied, "Another I.
  -- Diogenes Laertius (c. 200 AD) -- Zeno, xix...
• They also say that God is an animal immortal, rational
  perfect, and intellectual in his happiness, unsusceptible of any kind of evil, having a foreknowledge of the universe and of all that is in the universe...
• As some say, Solon was the author of the apophthegm, "Nothing in excess.
  -- Diogenes Laertius (c. 200 AD) -- Solon, xvi...
• Xenophanes was the first person who asserted... that the soul is a spirit.
  -- Diogenes Laertius (c. 200 AD) -- Xenophanes, iii...
• The chief good he has defined to be the exercise of virtue in a perfect life.
  -- Diogenes Laertius (c. 200 AD) -- Aristotle, xiii...
• Plato having defined man to be a two-legged animal without feathers, Diogenes plucked a cock and brought it into the Academy, and said, "This is Plato's man.
  On which account this addition was made to the definition,--"With broad at nails....
• One ought to seek out virtue for its own sake, without being influenced by fear or hope, or by any external influence.
  Moreover, that in that does happiness consist. -- Diogenes Laertius (c. 200 AD) -- Zeno, liii...
• The Stoics also teach that God is unity, and that he is called Mind and Fate and Jupiter, and by many other names besides.
  -- Diogenes Laertius (c. 200 AD) -- Zeno, lxviii...