This volume of Proclus' commentary on Plato's Timaeus records Proclus' exegesis of Timaeus 27a-31b, in which Plato first discusses preliminary matters that precede his account of the creation of the universe, and then moves to the account of the creation of the universe as a totality. For Proclus this text is a grand opportunity to reflect on the nature of causation as it relates to the physical reality of our cosmos. The commentary deals with many subjects that have been of central interest to philosophers from Plato's time onwards, such as the question whether the cosmos was created in time, and the nature of evil as it relates to physical reality and its ontological imperfection.
Proclus Lycaeus (/ˈprɒkləs ˌlaɪˈsiːəs/; 8 February 412 – 17 April 485 AD), called the Successor (Greek Πρόκλος ὁ Διάδοχος, Próklos ho Diádokhos), was a Greek Neoplatonist philosopher, one of the last major Classical philosophers (see Damascius). He set forth one of the most elaborate and fully developed systems of Neoplatonism. He stands near the end of the classical development of philosophy, and was very influential on Western medieval philosophy (Greek and Latin).