INTJ: Scientists

http://typelogic.com/intj.html
http://www.personalitypage.com/INTJ.html
http://en.wikipedia.org/wiki/INTJ
http://www.keirsey.com/4temps/mastermind.asp
http://www.purdue.edu/usp/pdfs/mbtiresources/INTJ.pdf
http://www.mypersonality.info/personality-types/intj/