That and your MBA. If you read Machiavelli's book, The Prince, you'll find it contains everything you would expect to learn getting your MBA with the exception of the finer points of accounting.
If you have higher ambitions than just becoming a captain of industry, give this a read. In 14 pages, it covers the bases fairly well. Don't worry, the print is big, and in several cases, it doesn't cover the whole page. No names are mentioned, but the actions called for may strike a familiar note.
It brings to mind a book by Mack Reynolds called Trample An Empire Down, published in the 60's I think. Worth a read, and available for under $2, about the founders of a political movement whose slogan was "What's in it for me?". Imagine the Tea Party going over to the dark side. Quite humorous.