Chance, Love and Logic pdf 파일임. Peirce-Charles-S.-Chance-Love-and-Logic.-Philosophical-Essays.pdf C. S. Peirce 2017.09.25
Reasoning and the Logic of Things pdf 파일임. peirce-reasoning-logic-things-caus-force-excerpt.pdf C. S. Peirce 2017.09.25
Philosophical Writings pdf 파일임. https://archive.org/details/valuesinuniverse00peir C. S. Peirce 2017.09.25