Here's the smart guide to surviving in the corporate jungle: think of it as a map to the corner office, the key to the executive bathroom, the shortcut to becoming top dog. Such gurus as Donald Trump, Jack Welch, Carl Icahn, Sun Tsu, and Machiavelli offer a wealth of insight on success and ethics (or lack thereof). Their wise words will speak to anyone who deals with a world of needless memos, curtailed lunch breaks, annoying "yes men," and other indignities.