Related:

• When he was praised by some wicked men, he said, "I am sadly afraid that I must have done some wicked thing.
  -- Diogenes Laertius (c. 200 AD) -- Antisthenes, iv...
• Bion used to say that the way to the shades below was easy
  he could go there with his eyes shut. -- Diogenes Laertius (c. 200 AD) -- Bion, iii...
• Of a rich man who was niggardly he said, "That man does not own his estate, but his estate owns him.
  -- Diogenes Laertius (c. 200 AD) -- Bion, iii...
• Bion insisted on the principle that "The property of friends is common.
  -- Diogenes Laertius (c. 200 AD) -- Bion, ix...
• 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...
• Aristotle was once asked what those who tell lies gain by it.
  Said he, "That when they speak truth they are not believed....
• When he was in great prosperity, and courted by many, seeing himself splendidly served at his table, he turned to his children and said
  "Children, we had been undone, if we had not been undone....
• 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...