8 March 1618 Posted on March 7, 2014 by Staff Johannes Kepler finds the third law of planetary motion. Famous Words of Inspiration..."A woman knows the face of the man she loves as a sailor knows the open sea." Honore de Balzac — Click here for more from Honore de Balzac Related posts: 8 March 1983 8 March 1978 23 March 1983 3 March 1913