"The Top Chess Player In The World Impressed The Heck Out Of Everyone At This NYC Exhibition". Interview with Gus Lubin, www.businessinsider.com. September 4, 2012.
Adam Smith (1817). “The Theory of Moral Sentiments: Or, An Essay Towards an Analysis of the Principles by which Men Naturally Judge Concerning the Conduct and Character, First of Their Neighbours, and Afterwards of Themselves : to which is Added, A Dissertation on the Origin of Languages”, p.379