Politics as a calling and profession

Who are professional politicians? Why does politics are attracted to those who want to live for "her account", and those who are ready to live for politics, she leaves overboard? Who is the political boss? What role does "charisma" play in the success of a politician? What is the connection between politics and ethics, and is there in principle a place of ethics in modern politics?
M. Weber touched all these and many other questions almost a century ago, but even today they sound relevant. It is difficult to imagine some other book, so compact in volume, but so saturated with meaning, classifications and definitions. This is definitely, the desktop book of all political scientists, as well as all those who are interested in politics and would like to understand the mechanisms of its functioning