If Huntington's clash of civilizations is to be avoided, there is no alternative to an honest, open--and at the same time critical--dialogue of religions and cultures between Christians and Muslims, who together constitute more than half the worlds population."--Christian Troll A participant in Muslim-Christian conversations for decades, Troll knows intimately the practical problems and shortcomings of both traditions. Learning to distinguish carefully in order to clarify what is at stake, Troll says, is necessary, "if the witness of faith is to meet open hearts and minds, with both sides honestly trying to solve the many problems both traditions have," utilizing the many resources each brings to a suffering world.