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• He declared that he knew nothing, except the fact of his ignorance.
  -- Diogenes Laertius (c. 200 AD) -- Socrates, xvi...
• He used to say that other men lived to eat, but that he ate to live.
  -- Diogenes Laertius (c. 200 AD) -- Socrates, xvi...
• When Zeno was asked what a friend was, he replied, "Another I.
  -- Diogenes Laertius (c. 200 AD) -- Zeno, xix...
• Asked from what country he came, he replied, "I am a citizen of the world.
  -- Diogenes Laertius (c. 200 AD) -- Diogenes, vi...
• When asked what wine he liked to drink, he replied, "That which belongs to another.
  -- Diogenes Laertius (c. 200 AD) -- Diogenes, vi...
• When asked what learning was the most necessary, he said, "Not to unlearn what you have learned.
  -- Diogenes Laertius (c. 200 AD) -- Antisthenes, iv...
• Bury me on my face," said Diogenes; and when he was asked why, he replied, "Because in a little while everything will be turned upside down.
  -- Diogenes Laertius (c. 200 AD) -- Diogenes, vi...
• 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...
• Aristophanes turns Socrates into ridicule in his comedies, as making the worse appear the better reason.
  -- Diogenes Laertius (c. 200 AD) -- Socrates, v...