Languages differ essentially in what they must convey and not in what they may convey.

Remember that the pharynx is at a crossroads from which leads off, at the top, the passage to the mouth cavity and the passage to the nasal cavity, and below, the passage to the larynx.

Acoustic phonetics, which is developing and increasing in richness very rapidly, already enables us to solve many of the mysteries of sound, mysteries which motor phonetics could not even begin to solve.

Languages differ essentially in what they must convey and not in what they may convey.

What's next? Shall we appoint elephants to teach zoology?

Bilingualism is for me the fundamental problem of linguistics.

It is once again the vexing problem of identity within variety; without a solution to this disturbing problem there can be no system, no classification.