 Diogenes Laërtius, early 3rd c. CE, indispensable for the history of Greek, esp. Hellenistic, philosophy: Lives and Maxims of Those who Have Distinguished themselves in Philosophy and the Doctrines of Each Sect, in ten books. As the title shows this work offers a blend of biography and doxography. Lay-out is according to philosophical schools: e.g., book seven gives the common dogmata of the Stoic school in the life of its founder. Ranges from the Seven Sages and the Presocratics to the Hellenistic schools up to the 2nd – 1st c. BCE. (Broad)