Nothing more manifestly distinguishes the Anglo-Saxon than his intense and persistent energy, and he is developing in the United States an energy which, in eager activity and effectiveness, is peculiarly American. This is due partly to the fact that Americans are much better fed than Europeans, and partly to the undeveloped resources of a new country, but more largely to our climate, which acts as a constant stimulus.  -   Josiah Strong     Quotes
Nothing more manifestly distinguishes the Anglo-Saxon than his intense and persistent energy, and he is developing in the United States an energy which, in eager activity and effectiveness, is peculiarly American. This is due partly to the fact that Americans are much better fed than Europeans, and partly to the undeveloped resources of a new country, but more largely to our climate, which acts as a constant stimulus. Josiah Strong
 Energy