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.

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

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

Human beings do not live in the objective world alone, nor alone in the world of social activity as ordinarily understood, but are very much at the mercy of the particular language which has become the medium of expression for their society.

Both French and Latin are involved with nationalistic and religious implications which could not be entirely shaken off, and so, while they seemed for a long time to have solved the international language problem up to a certain point, they did not really do so in spirit.

What fetters the mind and benumbs the spirit is ever the dogged acceptance of absolutes.

A second type of direct evidence is formed by statements, whether as formal legends or personal information, regarding the age or relative sequence of events in tribal history made by the natives themselves.