Nishida did not use an approach that imported ideas or a philological approach, learned only ways of thinking of his predecessors, developed his ideas uniquely, and therefore, his works are original and difficult to understand at first sight.
西田は思想輸入的・文献学的なアプローチを取らず、先人らの思考法だけを学び独自に思想を展開させたがゆえに、彼の著作は一見すると独創的で難解である。