What did Kepler believe the relationship was between mathematics and the natural work?

Kepler believed that mathematics was the fundamental language of the natural world, serving as a tool to uncover the underlying order and harmony of the universe. He argued that celestial bodies moved according to mathematical laws, which reflected a divine design. This conviction led him to formulate his laws of planetary motion, demonstrating that the cosmos could be understood through mathematical principles. Thus, for Kepler, mathematics was not just a tool but a means to grasp the divine architecture of nature.