Delphi Complete Works of Diogenes Laert...
A source page for quotes linked to Diogenes Laertius.
“When asked what learning was the most necessary, he said, Not to unlearn what you have learned!”
“Whichever you do, you will repent it.”
“The sun too penetrates into privies, but is not polluted by them.”
“That man does not possess his estate, but his estate possesses him.”
“Ignorance plays the chief part among men, and the multitude of words.”
“Diogenes, when asked from what country he came, replied, "I am a citizen of the world."”
“Plato affirmed that the soul was immortal and clothed in many bodies successively.”
“Socrates said, "Those who want fewest things are nearest to the gods.”
“Plato was continually saying to Xenocrates, "Sacrifice to the Graces.”
“Bion used to say that the way to the shades below was easy; he could go there with his eyes shut.”
“Xenophanes speaks thus:-And no man knows distinctly anything,And no man ever will.”
“As some say, Solon was the author of the apophthegm, "Nothing in excess.”
“Diogenes lighted a candle in the daytime, and went round saying, "I am looking for a man.”
“Diogenes would frequently praise those who were about to marry, and yet did not marry.”
“One of the sophisms of Chrysippus was, "If you have not lost a thing, you have it.”