The same qualities that have enabled Americans to conquer the wilderness, and to attempt tasks like the building of the Panama Canal and the sending of the battle fleet around the world, need to be applied now to our future problems; and these qualities, which include the power of self-government, together with the power of joining with others for mutual help, and, what is especially important, the feeling of comradeship, need to be applied in particular to that foremost of National problems, the problem of the preservation of our National resources. The question has two sides. In the first place, the actual destruction, or, if this is not possible, at any rate the needless waste, of the natural resources must be stopped. In the second place, so far as possible, these resources must be kept for the use of the whole people, and not handed over for exploitation to single individuals or groups of individuals. The first point I shall not here discuss at length. It is rapidly becoming a well-settled policy of this people that we of the present generation hold the land in part as trustees for the next generation, and not exclusively for our own selfish enjoyment. Just as the farmer is a good citizen if he leaves his farm improved and not impaired to his children, and a bad citizen if he cares nothing for his children and skins the land and destroys its value in his own selfish interest; so the Nation behaves well if it treats the soil and the water and the forests as assets which it must turn over to the next generation increased and not impaired in value, and behaves badly if it leaves the land poorer to those who come after us. No farm should be so used that the soil is permitted to depreciate in value; no forest so used as permanently to impair its productivity. The second part of the question relates to preserving and using our natural resources in the interest of the public as a whole. We do not intend to discourage individual excellence by improperly diminishing the reward for that individual excellence; on the contrary, our desire is to see that the fullest reward is given to the men of exceptional abilities, up to the point when the abilities are used to the detriment of the people as a whole. We favor the sheep man who feeds his sheep on his own range in such manner that the range increases instead of diminishes in value; and we are against the big man who does not live in the country at all, but who sends migratory bands of sheep with a few hired shepherds to wander over it, destroying pasturage and forests, and seriously impairing the value of the country for actual settlers. We are for the liberty of the individual up to, but not beyond, the point where it becomes inconsistent with the welfare of the community as a whole.