Today, no less than in the past, the tetrahedral form of the earth and the relation of the tetrahedron to the poles and to the equator preserve the conditions that favor rapid evolution.

History in its broadest aspect is a record of man's migrations from one environment to another.

The human organism inherits so delicate an adjustment to climate that, in spite of man's boasted ability to live anywhere, the strain of the frozen North eliminates the more nervous and active types of mind.

Year by year we are learning that in this restless, strenuous American life of ours vacations are essential.

In America the most widespread type of forest is the evergreen coniferous woodland of the north.

Man could not stay there forever. He was bound to spread to new regions, partly because of his innate migratory tendency and partly because of Nature's stern urgency.

The Indians could not undertake any widespread cultivation of the plains not only because they lacked iron tools but also because they had no draft animals.

Thus the races, though alike in their physical response to climate, may possibly be different in their mental response because they have approached America by different paths.

As a matter of fact, an ordinary desert supports a much greater variety of plants than does either a forest or a prairie.

Surprising as it may seem, this study indicates that similar conditions are best for all sorts of races.

The buffalo is a surprisingly stupid animal.

Although mountains may guide migrations, the plains are the regions where people dwell in greatest numbers.

For the source of any characteristic so widespread and uniform as this adaptation to environment we must go back to the very beginning of the human race.

From first to last the civilization of America has been bound up with its physical environment.

America is the last great goal of these migrations.

We are learning, too, that the love of beauty is one of Nature's greatest healers.

America forms the longest and straightest bone in the earth's skeleton.

According to the now almost universally accepted theory, all the races of mankind had a common origin.

It seems strange that almost no other traces of the strong vikings are found in America.

Curiously enough man's body and his mind appear to differ in their climatic adaptations.

The Negro, however, has been tested on an extensive scale.

The coast of British Columbia was one of the three chief centers of aboriginal America.

In fact, the history of North America has been perhaps more profoundly influenced by man's inheritance from his past homes than by the physical features of his present home.

A journey of four hundred and thirty miles can be made in any part of the United States, but in Turkey it takes as many days.

The evidence points to central Asia as man's original home, for the general movement of human migrations has been outward from that region and not inward.

Although farming of any sort was almost as impossible in the plains as in the dry regions of winter rains farther west, the abundance of buffaloes made life much easier in many respects.

Geologists are rapidly becoming convinced that the mammals spread from their central Asian point of origin largely because of great variations in climate.

Fertile soil, level plains, easy passage across the mountains, coal, iron, and other metals imbedded in the rocks, and a stimulating climate, all shower their blessings upon man.

Again and again, to be sure, on the way to America, and under many other circumstances, man has passed through the most adverse climates and has survived, but he has flourished and waxed strong only in certain zones.

The geysers and hot springs of the Yellowstone are another proof of recent volcanic activity.

No part of the world can be truly understood without a knowledge of its garment of vegetation, for this determines not only the nature of the animal inhabitants but also the occupations of the majority of human beings.

Today, no less than in the past, the tetrahedral form of the earth and the relation of the tetrahedron to the poles and to the equator preserve the conditions that favor rapid evolution.

After washing there was no place to pour the water except out of the window onto the heads of the people in the streets, which is the proper place to throw everything that is not wanted.

Except on their southern borders the great northern forests are not good as a permanent home for man.

Nevertheless most of the evergreen forests of the north must always remain the home of wild animals and trappers, a backward region in which it is easy for a great fur company to maintain a practical monopoly.

The French are the wittiest, the most charming, and up to the present, at all events, the least musical race on Earth.

My life has been a continuous fulfillment of dreams. It appears that everything I saw and did has a new, and perhaps, more significant meaning, every time I see it. The earth is good. It is a privilege to live thereon.

I believe as human beings we are out of balance, out of synch with the earth.

We are put on this earth to have a good time. This makes other people feel good. And the cycle continues.

All men are by nature equal, made all of the same earth by one Workman; and however we deceive ourselves, as dear unto God is the poor peasant as the mighty prince.

Infuse your life with action. Don't wait for it to happen. Make it happen. Make your own future. Make your own hope. Make your own love. And whatever your beliefs, honor your creator, not by passively waiting for grace to come down from upon high, but by doing what you can to make grace happen... yourself, right now, right down here on Earth.

You know, if you hang around this earth long enough you really see how things come full circle.

With a firm and steadfast mind one should hold under all conditions, that everywhere the earth is below and the sky above, and to the energetic man, every region is his fatherland.

A time will come when men will stretch out their eyes. They should see planets like our Earth.

When I say artist I mean the man who is building things - creating molding the earth - whether it be the plains of the west - or the iron ore of Penn. It's all a big game of construction - some with a brush - some with a shovel - some choose a pen.

Long after this wonderful event in the Earth's history, when the human species was spread over a good deal of Asia, Europe, and Africa, migration to the American continents began in attempts to find new feeding grounds and unoccupied areas for hunting and fishing.

My object will be, first, to show by what connections the history of the fossil bones of land animals is linked to the theory of the earth and why they have a particular importance in this respect.

I just did a picture book called The Wildest Brother on Earth, and you will find both of my children in there.

A good businessman never makes a contract unless he's sure he can carry it through, yet every fool on earth is perfectly willing to sign a marriage contract without considering whether he can live up to it or not.