If we lose the virile, manly qualities, and sink into a nation of mere hucksters, putting gain over national honor, and subordinating everything to mere ease of life, then we shall indeed reach a condition worse than that of the ancient civilizations in the years of their decay.

"The Law of Civilization and Decay", The Forum (January 1897), reprinted in American Ideals (1926), vol. 13 of The Works of Theodore Roosevelt, national ed., chapter 15, pp. 259–60