Each principle is a sentence presented on single page followed by an explanation that is frequently only one paragraph long. This the book's virtue: it is written so well and its principles are so carefully chosen that this format delivers a surprising wealth of useful information.
In addition, the principles are intelligently cross referenced so that reading a single principle will allow the reader to easily discover several other important related ideas. The principles are also indexed in an excellent reference section at the end of book, which links the principles to the original sources.
Finally, it's worth mentioning that this is also an attractive book, a rarity and a blessing since it will likely remain on the bookshelf years after other books have lost their relevance.