2006 年 54 巻 2 号 p. 988-985,1337
The purpose of the Mulamadhyamakakarika is to declare nihsvabhavata. For this purpose, Nagarjuna reveals the opponents' contradictions throughvarious means, and proves nihsvabhavata. There are “five types of quest” in his argument. The “five types of quest” adds a denial of difference to the argumentation against wrong views found in Early Buddhism, and leads to the establishment of nihsvabhavata. This paper will show how the way of the argument developed to the “five types of quest” from Early Buddhism's formulation.