Merriam-Webster's Dictionary of Synonyms, 1984, s.v. 'concise' p. 172.
Henry Percy Smith, Synonyms Discriminated (1904) p. 541.
Taylor, A.E., Plato: The Man and His Work, Meridian Books, 6th ed., 1949; on p. 255 Taylor suggests Socrates is mocking, in jest, other Greeks who affect a Spartan lifestyle as the epitome of rugged manliness for not realizing their models are closet intellectuals.
