When David A. Dilworth wrote about Nishida's work, he did not mention the debut book in his useful classification. In his book "Zen no kenkyū" (An Inquiry into the Good), Nishida writes about experience, reality, good and religion. He argues that the most profound form of experience is the pure experience. Nishida analyzes the thought, the will, the intellectual intuition and the pure experience among them. According to Nishida's vision as well as to the essence of Asian wisdom, one craves harmony in experience, for unity.