The "Introduction" tells us that the contents are based mainly on a class offered by the writer in the Department of Religion at Temple University in the US. Thus the argumentation is clearly set out, and the logic clearly presented; there is a great deal of data and the structure is well integrated.
＜引論＞告訴我們，本書內容主要取自作者在美國天普大學宗教學研究所所開的一門課，因此層次井然，理路分明，資料詳盡，體系完整。