"Such a picture of man in the universe is clearly presented in the language of the Wintu Indians of California. Here the primary verbal stem refers to a world, a universe, that neither exists nor does not exist. We might say that it refers to the nature of things, a nature which is not realized because the things themselves do not exist, the situations have not come to be and may never come to be. Only at the instant when man experiences these do they come into existence, into history. The experiential or existential stem of the verb is derivative from this other stem. When man speaks with the aid of this stem, he asserts existence through his own experience of it. And it is only through his doing, through, probably, his decisive act or his act of will, that the world to which the primary stem refers can have concrete existence. This dialogue between the idea of the universe or the potential of the universe, and man's experience, runs through the entire linguistic structure." p.115.
Lee, D. (1961). Autonomous Motivation. In. Anthropology and education. Series: Martin G. Brumbaugh lectures in education., Series 5. Gruber, Frederick C. (Ed.). Philadelphia: University of Pennsylvania Press. pp. 103-123.