Walter Isaacson, the former media executive who has written a shelfful of magisterial biographies on Benjamin Franklin and other history-changers, will be out Tuesday with a wee, 67-page hardcover, "The Greatest Sentence Ever Written" — an optimistic exposition of the most famous sentence in the Declaration of Independence.
The sentence in question: "We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty, and the pursuit of Happiness."
