The object of this book is explain the relation between the Jews and the nations around them in Europe at the beginning of the 20th century. The author addresses problems and challenges of mutual life in mixed communities as well as cultural differences between Jewish community and Christian population. Contents: • The Thesis of This Book • The Denial of the Problem • The Present Phase of the Problem • The General Cause of Friction • The Special Causes of Friction • The Cause of Friction Upon Our Side • The Anti-Semite • Bolshevism • The Position in the World as a Whole • The Present Relation Between the English State and the Jews • Zionism • Our Duty • Their Duty • Various Theories • Habit or Law?