Kepler’s laws are well embedded in our classical physics, established by Newton in 1687. But they were discovered almost 80 years before, in a dramatically different context, in which the German astronomer could not count on appropriate maths or physics, neither on what we call “scientific method”. How could he succeed in finding his astronomical laws? After a brief picture of Kepler’s historical context, I’ll focus on his second and third astronomical laws, retracing the unorthodox maps that, blended together, guided the scientist in his scientific path.