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• When asked what wine he liked to drink, he replied, "That which belongs to another.
  -- Diogenes Laertius (c. 200 AD) -- Diogenes, vi...
• Asked from what country he came, he replied, "I am a citizen of the world.
  -- Diogenes Laertius (c. 200 AD) -- Diogenes, vi...
• When Zeno was asked what a friend was, he replied, "Another I.
  -- Diogenes Laertius (c. 200 AD) -- Zeno, xix...
• When asked what he would take to let a man give him a blow on the head, he said, "A helmet.
  -- Diogenes Laertius (c. 200 AD) -- Diogenes, vi...
• Be of good cheer," said Diogenes; "I see land." -- Diogenes Laertius (c. 200 AD) -- Diogenes, vi
• When a man reproached him for going into unclean places, he said, "The sun too penetrates into privies, but is not polluted by them.
  -- 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...
• Being asked whether it was better to marry or not, he replied, "Whichever you do, you will repent it.
  -- Diogenes Laertius (c. 200 AD) -- Socrates, xvi...
• Very late in life, when he was studying geometry, some one said to Lacydes, "Is it then a time for you to be learning now?
  If it is not," he replied, "when will it be?" -- Diogenes Laertius (c. 200 AD) -- Lacydes, v...