This is, in our humble opinion, the single most important sentence in the entire literature of intellience, from a practical stand-point. There are other sentences on ethics, on leadership, on focus, but in terms of the root nature of the intelligence discipline and all that is wrong with the USA approach to this discipline, this sentence is our favorite.
It is the last sentence on the last page of his second book, BODY OF SECRETS.
Typos fixed 28 Dec 09