The Statesman or Politicus is a late Platonic dialogue, a sequel to The Sophist, addressing similar themes. The discussion seeks to identify the kind of knowledge proper to the true statesman, distinguishing it from the knowledge of appearances that characterizes the sophist.
Free online and downloadable texts
Gutenberg: The Statesman, translated by Benjamin Jowett, multiple formats.
University of Adelaide (Internet Archive): The Statesman. EPUB, HTML and MOBI formats.
Wikisource: The Statesman, translated by Benjamin Jowett. Online text.
Librivox: The Statesman - public domain audiobook.
PhilPapers: Plato - Politicus - bibliography with open access option.
Wikipedia: The Statesman.
The Great Conversation: Further reading at Tom's Learning Notes
Ancient Greek resources: Learn to read Greek classics in the original.
Plato: The Sophist
Bloom's Western Canon: Plato's Dialogues are listed.