In the series of « Schematic Explanations”, written between 1934 and 1939, Nishida Kitarō (1870–1945) employed a wide range of logical and mathematical symbols and formulas to clarify the epistemological structure of his philosophy. Through this approach, he successfully demonstrated the complementarity between contrary concepts such as space and time, object and subject, as well as body and consciousness. For example, the formula M, i.e. A≡E signifies that the medium M (typically referring to the historical or dialectical world) consists of the concomitance (soku 即, ≡) of the domain of the object A (Allgemeines) and the domain of the subject E (Einzelnes) within the historical world M. In a strictly symmetrical manner, the formula m, i.e. a≡e expresses that the individual self, as a dialectical thing m, consists of the concomitance (soku 即, ≡) of a body a (as an element of the set A) and a consciousness e (as an element of the set E). To highlight the effectiveness of Nishida’s schematism, this presentation aims to establish a “grammar” of these symbols and formulas. In this endeavor, I will draw inspiration from the philosopher and mathematician Sueki Takehiro (1921–2007), one the most prominent interpreters of Nishida’s philosophy. I will categorize these symbols and formulas, compare them, and identify recurring patterns that will allow us to understand Nishida’s language and logic more deeply.