Authors:

The more complex the problems of the Nation become, the greater is the need for more and more advanced instruction.

Herbert Hoover, Arnold S. Rice, United States. President (1929-1933 : Hoover) (1971). “Herbert Hoover, 1874-1964; chronology-documents-bibliographical aids”, Oceana Pubns
The more complex the problems of the Nation become, the greater is the need for more and more advanced instruction.