Roosvelt used to believe that our ancestors, despite the fact that they knew very little about the natural resources the United States had, were very cautious since they only took what they needed from the surface and it never crossed their mind to exert excessive use of the immense natural wealth existing. This momentum of conservation was the one that Roosvelt highlighted, which should be taken to focus the country on a path in which resources were exploited to generate development but not carried out excessively since this would lead to an imminent exhaustion of some of the resources natural and that in a time of crisis would generate a loss of patriotism and a weakening of the Nation.