The six radio broadcasts published here were given in
the fall of 1973 as the thirteenth series ofMassey Lectures.
They were organized and produced by James Anderson,
executive producer of the Ideas unit of the CBC Radio Arts Department.
Begun by the CBC in 1961 to enable distinguished authorities in fields
of general interest and importance to present the results of original study or research,
the lecture series was named in honour of the Rt. Hon. Vincent Massey,
former Governor General of Canada.