That essay discusses the distinction between the pair "distinct / confused" and "obscure" and the title quality, which is the entity that mathematical logic confers on formalized thoughts.
In 1892 this thinker published the first of a series of five essays for The Monist which notes that  Law and Chance have always been diametrically opposed before arguing that classical mechanics must fail on the atomic level. An 1881 paper by this author of The Architecture of Theories proved the completeness of Boolean algebra from the "Not And" operator alone. Another essay by this man asks the reader to form a conception of the definition of the word "hard" then a definition of the word "weight" before outlining how equivalent paths have the same beginning and end points. That essay by this logician uses a geometric way of calculating forces to argue that even though we know what is force, it is something we do not understand. That essay discusses the distinction between the pair "distinct / confused" and "obscure" and the title quality, which is the entity that mathematical logic confers on formalized thoughts. For 10 points, identify this author of "How to Make Our Ideas Clear," an early American pragmatist.
In 1892 this thinker published the first of a series of five essays for The Monist which notes that  Law and Chance have always been diametrically opposed before arguing that classical mechanics must fail on the atomic level.
Charles Sanders Peirce 