"There are a number of ways by which the Federal Government can meet its responsibilities to aid economic growth. We can and must improve American education and technical training. We can and must expand civilian research and technology. One of the great bottlenecks for this country's economic growth in this decade will be the shortage of doctorates in mathematics, engineering, and physics; a serious shortage with a great demand and an under-supply of highly trained manpower. We can and must step up the development of our natural resources. But the most direct and significant kind of Federal action aiding economic growth is to make possible an increase in private consumption and investment demand--to cut the fetters which hold back private spending. In the past, this could be done in part by the increased use of credit and monetary tools, but our balance of payments situation today places limits on our use of those tools for expansion. It could also be done by increasing Federal expenditures more rapidly than necessary, but such a course would soon demoralize both the Government and our economy. If Government is to retain the confidence of the people, it must not spend more than can be justified on grounds of national need or spent with maximum efficiency."