Examined lives. Diogenes Laertius author of a work on Greek philosophy lived probably in the earlier half of the third century his ancestry and birthplace being unknown. He was an Epicurean philosopher but his work is not philosophical. The title is History of Philosophy or On the Lives Opinions and Sayings of Famous Philosophers; the work in ten books is divided unscientifically into two Successions or sections: Ionian from Anaximander to Theophrastus and Chrysippus including the Socratic schools; Italian from Pythagoras to Epicurus (who fills all the last book) including the Eleatics and Sceptics. It is a collection of quotations and facts and is of very great value. The Loeb Classical Library edition of Diogenes Laertius is in two volumes.