Description:This is the first critical edition of Diogenes Laertius' History of Greek Philosophy based on full evidence (both direct and indirect). The Greek text is radically emended from Diogenes' sources. This edition provides an ample double apparatus. In apparatus criticus all variae lectiones of codices BPF and Phi are reported. Vol. II comprises the first edition of Magnum excerptum from Diogenes Laertius preserved in the Vatican codex Phi (XIIth century), Ps.-Hesychii de viris illustribus from the same codex, and all the excerpts from Diogenes Laertius in the Suda.