In the Grand Canyon, Arizona has a natural wonder which is in kind absolutely unparalleled throughout the rest of the world. I want to ask you to keep this great wonder of nature as it now is. I hope you will not have a building of any kind, not a summer cottage, a hotel or anything else, to mar the wonderful grandeur, the sublimity, the great loneliness and beauty of the canyon. Leave it as it is. You cannot improve on it. The ages have been at work on it, and man can only mar it.
There is no patent recipe for getting good citizenship. You get it by applying the old, old rules of decent conduct, the rules in accordance with which decent men have had to shape their lives from the beginning .. fundamental precepts, put forth in the Bible and embodied consciously or unconsciously in the code of morals of every great and successful nation from antiquity to modern times.
Nowadays the field naturalist-who is usually at all points superior to the mere closet naturalist-follows a profession as full of hazard and interest as that of the explorer or of the big-game hunter in the remote wilderness.
Willful sterility is, from the standpoint of the nation, from the standpoint of the human race, the one sin for which the penalty is national death, race death; a sin for which there is no atonement. No man, no woman, can shirk the primary duties of life, whether for love of ease and pleasure, or for any other cause, and retain his or her self-respect.
I was a reasonably good student in college ... My chief interests were scientific. When I entered college, I was devoted to out-of-doors natural history, and my ambition was to be a scientific man of the Audubon, or Wilson, or Baird, or Coues type-a man like Hart Merriam, or Frank Chapman, or Hornaday, to-day.
Among the wise and high-minded people who in self-respecting and genuine fashion strive earnestly for peace, there are the foolish fanatics always to be found in such a movement and always discrediting it the men who form the lunatic fringe in all reform movements.
I believe that the next half century will determine if we will advance the cause of Christian civilization or revert to the horrors of brutal paganism.
A soft, easy life is not worth living, if it impairs the fibre of brain and heart and muscle. We must dare to be great; and we must realize that greatness is the fruit of toil and sacrifice and high courage... For us is the life of action, of strenuous performance of duty; let us live in the harness, striving mightily; let us rather run the risk of wearing out than rusting out.