He said that although "nothing can in any way diminish the profound originality of the Amerindian civilizations," "... there is a multitude of culture traits which point to influences from, and contacts with, the Old World."
不過他也說，「這並非否定中美洲高度的文化淵源，只是說從亞洲來的影響，可能有助於他們去創造它。」