8 March 1618 Posted on March 7, 2014 by Staff Johannes Kepler finds the third law of planetary motion. Famous Words of Inspiration..."Whatever you can do, or dream you can do, begin it. Boldness has genius, power and magic in it." Johann Wolfgang von Goethe — Click here for more from Johann Wolfgang von Goethe Related posts: 8 March 1983 8 March 1978 23 March 1983 3 March 1913