"Thucydides concentrated on political life; it was here that he found the meaning of human effort. By understanding the political life of the present, and its military consequences, he believed that he had understood the nature of man in its perennial elements. He refrained almost completely from descriptions of foreign lands, unusual occurrences (with the exception of the plague), anecdotes about famous individuals, myths and cults, or information about monuments conspicuous for beauty or greatness. He was at pains to understand the Peloponnesian War as the sum of human nature – so much that he entertained no doubt whatsoever about the premises of his method."