http://www.iep.utm.edu/s/spinoza.htm
http://en.wikipedia.org/wiki/Baruch_Spinoza
http://www.philosophypages.com/ph/spin.htm
_ Anthony Quinton on Spinoza and Leibniz: Section 1
http://jp.youtube.com/watch?v=GmbGbo-oyKc
_ Spinoza
http://jp.youtube.com/watch?v=eIlUBZgW7Xk
_ Steven Nadler talk on Spinoza - Part 2 of 2
http://jp.youtube.com/watch?v=O_wLDXI9cIs