No two languages are ever sufficiently similar to be considered as representing the same social reality.

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.

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

We see and hear and otherwise experience very largely as we do because the language habits of our community predispose certain choices of interpretation.

English, once accepted as an international language, is no more secure than French has proved to be as the one and only accepted language of diplomacy or as Latin has proved to be as the international language of science.

A common creation demands a common sacrifice, and perhaps not the least potent argument in favour of a constructed international language is the fact that it is equally foreign, or apparently so, to the traditions of all nationalities.

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.