Machiavelli - http://plato.stanford.edu/entries/machiavelli/
Utilitarianism/Consequentialism - http://plato.stanford.edu/entries/utilitarianism-history/
Deontology - http://webs.wofford.edu/kaycd/ethics/deon.htm
Immanuel Kant - http://www.britannica.com/EBchecked/topic/311398/Immanuel-Kant
Kant and Categorical Imperative - http://www.qcc.cuny.edu/socialsciences/ppecorino/intro_text/Chapter%208%20Ethics/Categorical_Imperative.htm
