 Royce understood logic as the science of order focused on “problems regarding, not the methods by which a thinker succeeds, nor yet the norms, but rather the Forms, the Categories, the Types of Order, which characterize any realm of objects” (Royce 1913a, 69). In a variety of work beginning with The World and The Individual (1900) continuing through the remainder of his life in published and unpublished papers, Royce proposed a logical system with both formal and informal, philosophical implications. He called his logic “System \(\Sigma\).”