To all thoughtful people World War I has brought to intention the importance of a knowledge of 19th Century European history. For without such knowledge no one can understand, or begin to understand, the significance of the forces that have made it, the vastness of the issues involved, the nature of what is indisputably one of the gravest crises in the history of mankind. No citizen of a free country who takes his citizenship seriously, who considers himself responsible, to the full extent of...
