Why would a Northern Irish Protestant, raised in a staunchly loyalist community, hitchhike through Catholic Europe on the trail of medieval celtic monks? Why is the seaside town of Bangor in Northern Ireland largely responsible for Europe becoming a Christian continent? What role did an Ulsterman play in the creation of the European Union, and what can be done today to break down walls and bring people together? Who was Columbanus of Bangor and why are present-day librarians from all over the world indebted to him? Why does God not like zebras, has Murphy's Law anything to do with chaos...