'Pax mundi' is an interesting book that lays out the author's thoughts on what countries must abide by for world peace to become a reality. It was written by Klas Pontus Arnoldson, a Swedish author, journalist, politician, and committed pacifist who received the Nobel Peace Prize in 1908 with Fredrik Bajer. He was a founding member of the Swedish Peace and Arbitration Society and served as a Member of Parliament in the second Chamber from 1882 to 1887.