A.E. Taylor 
Plato: The Man and His Work (RLE: Plato) [EPUB ebook] 

This book provides an introduction to Plato’s work that gives a clear statement of what Plato has to say about the problems of thought and life. In particular,  it tells the reader just what Plato says, and makes no attempt to force a system on the Platonic text or to trim Plato’s works to suit contemporary philosophical tastes. The author also gives an account that has historical fidelity – we cannot really understand the Republic or the Gorgias if we forget that the Athens of the conversations is meant to be the Athens of Nicias or Cleon, not the very different Athens of Plato’s own manhood. To understand Plato’s thought we must see it in the right historical perspective.