Are human beings fundamentally good or bad? Does society keep us in check or corrupt us? 

From Aristotle to Freud, Hobbes to Rousseau, philosophers and ethicists have pondered these ideas for centuries, perhaps with the reasonable expectation that they may be unanswerable questions. 

But could science finally provide an answer?

Nicholas Christakis is the Director of the Human Nature Lab at Yale University and Author of Blueprint: The Evolutionary Origins of a Good Society