The ultimate companion/ commentary to Nishitani Keiji's masterpiece, Religion and Nothingness, this book edited by Unno Taitetsu elucidates various aspects of Nishitani's philosophy. For someone to delve into Religion and Nothingness and Nishitani's thought in general, this is a must read.
In fact, preferably these two books should be read hermeneutically: when encountering bewilderment in reading Religion and Nothingness, one should pick up The Religious philosophy of Nishitani Keiji and seek clarity there, and again going back to Nishitani's masterpiece to deepen understanding of that great book.
In summary, The Religious philosophy... treats topics as various as Nishitani's own interest were, and sheds on them light shining from nothingness.