A standard international language should not only be simple, regular, and logical, but also rich and creative.

The psychology of a language which, in one way or another, is imposed upon one because of factors beyond one's control, is very different from the psychology of a language which one accepts of one's free will.

No important national language, at least in the Occidental world, has complete regularity of grammatical structure, nor is there a single logical category which is adequately and consistently handled in terms of linguistic symbolism.

Comparison of statements made at different periods frequently enable us to give maximal and minimal dates to the appearance of a cultural element or to assign the time limits to a movement of population.

I am convinced that the stratigraphic method will in the future enable archaeology to throw far more light on the history of American culture than it has done in the past.

In a sense, every form of expression is imposed upon one by social factors, one's own language above all.

A common allegiance to form of expression that is identified with no single national unit is likely to prove one of the most potent symbols of the freedom of the human spirit that the world has yet known.