For those seeking to understand the nature of war and human behavior in war, this is the book to read. The story of greed and ambition - and the adverse effects it can have on policy - threads its way through the book. Thucydides' remark, "I have written this work, not as an essay which is to win applause of the moment, but as a possession for all time" is a very appropriate statement. The eternity of Thucydides' work is evident in the similarities of policy and war today as compared to the author's world. The numerous maps and footnoting within this book, makes it much easier to comprehend than other accounts of the Peloponnesian War.