"Discover the force of the skies O Men: once recognised it can be put to use." ― Johannes Kepler From Johannes Kepler Scientist Added on 1/31/2026 About Johannes Kepler Johannes Kepler was a German astronomer and mathematician who formulated the laws of planetary motion. His work provided essential foundations for modern astronomy and celestial mechanics. Born: 1571-12-27 Died: 1630-11-15 View all quotes from Johannes Kepler