Gregory Vlastos (/ˈvlæstoʊs/; Greek: Γρηγόριος Βλαστός; July 27, 1907 – October 12, 1991) was a preeminent scholar of ancient philosophy, and author of many works on Plato and Socrates.
Vlastos is credited with bringing about a renaissance of interest in Plato among philosophers throughout the world.
[3] Many of Vlastos' students have become important scholars of ancient philosophy, including Terence Irwin, Richard Kraut, Paul Woodruff, and Alexander Nehamas.
In his work The Philosophy of Socrates: a Collection of Critical Essays (UNDP 1971), Vlastos advanced the idea "that one can identify in certain Platonic dialogues a philosophical method and a collection of philosophical theses which may properly be attributed to Socrates.
The dialogues of Plato’s Socratic period, called "elenctic dialogues" for Socrates’s preferred method of questioning, are Apology, Charmides, Crito, Euthyphro, Gorgias, Hippias Minor, Ion, Laches, Protagoras and book 1 of the Republic.