Buddhism is said to be an irrational thought. Is there any way to understand rationally such a thought as Buddhism ? It may be said that science and Buddhism cannot understand each other unless the letter can be rationally understood. How should we try to proceed it in order to get a rational understanding of Buddhism ? Buddhism, with its final cause of nirvana making human being free from agonies (duhkha), is not only a thought of the salvation but a thought under the view of the value by sensibilities, a kind of subjectiv feeling aiming at being freed from agonies. I think, therefore, it may be called a kind of pragmatic lines of thought. In this paper I tried only to make this pragmatic thought a little clear.
