The Prince by Nicolo Machiavelli (Unabridged‪)‬

"Everyone sees what you appear to be, few experience what you really are." (Nicolò Machiavelli)

The Prince is a 16th-century political treatise by the Italian diplomat and political theorist Niccolò Machiavelli. The Prince is sometimes claimed to be one of the first works of modern philosophy, especially modern political philosophy, in which the "effectual" truth is taken to be more important than any abstract ideal. It is also notable for being in direct conflict with the dominant Catholic and scholastic doctrines of the time, particularly those concerning politics and ethics. Although it is relatively short, the treatise is the most remembered of Machiavelli's works and the one most responsible for bringing the word "Machiavellian" into usage as a pejorative. It even contributed to the modern negative connotations of the words "politics" and "politician" in western countries. 

A true classic!