http://en.wikipedia.org/wiki/Blaise_Pascal
http://www-history.mcs.st-and.ac.uk/Mathematicians/Pascal.html
_ Blaise Pascal - Rossellini film, part 1 (no credits)
http://www.youtube.com/watch?v=xfrZuxQhu50
_ Unsung Philosophers: Blaise Pascal
http://www.youtube.com/watch?v=mTHN_eQaEaI