From Roy Chapman Andrews' excellent book 'Across Mongolian Plains' published in 1921.
As every traveler knows, the natives of a country usually have developed the best possible clothes and dwellings for the peculiar conditions under which they live. Just as the Mongol felt-covered yurt and tent are all that can be desired, so do they know that fur and leather are the only clothing to keep them warm during the bitter winter months.
In the carts we had an ample supply of flour, bacon, coffee, tea, sugar, and dried fruit. For meat, we depended upon our guns, of course, and always had as much as could be used. Although we did not travel deluxe, nevertheless we were entirely comfortable. When a man boasts of the way in which he discards even necessaries in the field, you can be morally certain that he has not done much real traveling. "Roughing it" does not harmonize well with hard work. One must accept enough discomforts under the best conditions without the addition of any which can be avoided.
Good health is the prime requisite in the field. Without it you are lost. The only way in which to keep fit and ready to give every ounce of physical and mental energy to the problems of the day is to sleep comfortably, eat wholesome food, and be properly clothed. It is not often, then, that you will need a doctor. We have not as yet had a physician on any of our expeditions, even though we have often been very many miles from the nearest white men.
It never ceases to amuse me that the insurance companies always cancel my accident policies as soon as I leave for the field. The excuse is that I am not a "good risk," although they are ready enough to renew them when I return to New York. And yet the average person has a hundred times more chance of being killed or injured right on Fifth Avenue than do we who live in the open, breathing God's fresh air and sleeping under the stars. My friend Stefansson, the Arctic explorer, often says that "adventures are a mark of incompetence," and he is doubtless right. If a man goes into the field with a knowledge of the country he is to visit and with a proper equipment, he probably will have very few "adventures." If he has not the knowledge and equipment he had much better remain at home, for he will inevitably come to grief.