Related:

• When asked what learning was the most necessary, he said, "Not to unlearn what you have learned.
  -- Diogenes Laertius (c. 200 AD) -- Antisthenes, iv...
• 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...
• Diogenes would frequently praise those who were about to marry, and yet did not marry.
  -- Diogenes Laertius (c. 200 AD) -- Diogenes, iv...
• Pythagoras used to say that he had received as a gift from Mercury the perpetual transmigration of his soul, so that it was constantly transmigrating and passing into all sorts of plants or animals.
  -- Diogenes Laertius (c. 200 AD) -- Pythagoras, iv...
• He used to say that it was better to have one friend of great value than many friends who were good for nothing.
  -- Diogenes Laertius (c. 200 AD) -- Anarcharsis, v...
• He used to say that personal beauty was a better introduction than any lette
  -- Diogenes Laertius (c. 200 AD) -- Aristotle, xi...
• 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...
• He used to say that other men lived to eat, but that he ate to live.
  -- Diogenes Laertius (c. 200 AD) -- Socrates, xvi...
• Ignorance plays the chief part among men, and the multitude of word
  -- Diogenes Laertius (c. 200 AD) -- Cleobulus, iv...