In his Nobel Peace Prize lecture in Oslo, December 11, 1957, Mr. Lester B. Pearson, the former Canadian Secretary of State for External Affairs, called attention to a fact that his generation and mine are more aware of than our younger contemporaries. He said that as a result of the spectacular advances in the physical sciences during the last fifty years, a man who had lived in 1507 would have felt more at home in 1907 than one who had died in 1907 if he came back to life today. Mr. Pearson went on to say that" a great gulf has been opened between man's material advance and his social and moral progress; a gulf in which he may one day be lost if it is not closed or narrowed."