Thomas Hobbes

http://en.wikipedia.org/wiki/Thomas_Hobbes
http://www.iep.utm.edu/hobmoral/
http://plato.stanford.edu/entries/hobbes-moral/
http://oregonstate.edu/instruct/phl302/philosophers/hobbes.html
http://www-history.mcs.st-andrews.ac.uk/Mathematicians/Hobbes.html
http://jim.com/hobbes.htm