As an Aristotelian, Thomas Aquinas (1224–1274) believed that every object has its proper place. He also held the Eudoxian astronomical view that Earth was in the center of 49 to 53 concentric spheres. However, he thought that scientific conclusions required judgment and assessment, so that all findings and reports should be considered and compared. He also believed that scientific information could be changed and revised, which is a strong tenet of modern empiricism.