"This law represents a cornerstone in a structure which is being built but is by no means completed--a structure intended to lessen the force of possible future depressions, to act as a protection to future administrations of the Government against the necessity of going deeply into debt to furnish relief to the needy--a law to flatten out the peaks and valleys of deflation and of inflation--in other words, a law that will take care of human needs and at the same time provide for the United States an economic structure of vastly greater soundness."