The subject matter of architectonic is the structure of all human knowledge. The purpose of providing an architectonic scheme is to classify different types of knowledge and explain the relationships that exist between these classifications. Peirce’s own architectonic system divides knowledge according to it status as a "science" and then explains the interrelation of these different scientific disciplines. His belief was that philosophy must be placed within this systematic account of knowledge as science. Peirce adopts his architectonic ambitions of structuring all knowledge, and organizing philosophy within it, from his great philosophical hero, Kant. This systematizing approach became crucial for Peirce in his later work. However, his belief in a structured philosophy related systematically to all other scientific disciplines was important to him throughout his philosophical life.