While it is generally agreed that the visible expressions and agencies are necessary instruments, civilization seems to depend far more fundamentally upon the moral and intellectual qualities of human beings -- upon the spirit that animates mankind.
Source: Woman as a Force in History, Ch. 12, 1946.
-- Mary Ritter Beard, (Aug 5 1876-1958), US historian, writer; She championed women's causes and labor movements in Woman as a Force in History, 1946.