Johannes Kepler

Johannes Kepler, a key figure in the scientific revolution, was a German Lutheran, a mathematician, astrologer, astronomer, and a professionally trained theologian. As a Pythagorean mystic, he thought of the universe as founded on mathematical relationships and forming an integrated whole. Thus, he applied terrestrial physics to celestial bodies. This approach was in contrast to that of Plato and Aristotle, who thought that the Earth was fundamentally different from the rest of the universe and operated under different natural laws.