Kagawa Tyohiko, who was a well known Christian leader and social reformer, is re-evaluated from the perspective of a public philosophy, and as an example of the possibilities for collaboration and conflict between science and the religious humanities in East Asia. His last book, Cosmic Purpose, which appears to be a kind of natural theology, is analyzed from the perspective of the hidden topic of human evil. By considering Kagawa's deep religious sensibility and conscience, the book can be interpreted to (...) reflect on the wrong directionality selected by modern Japan's leaders that resulted in the tragic war. (shrink)