Bilingualism is for me the fundamental problem of linguistics.

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

Speech sounds cannot be understood, delimited, classified and explained except in the light of the tasks which they perform in language.

In poetic language, in which the sign as such takes on an autonomous value, this sound symbolism becomes an actual factor and creates a sort of accompaniment to the signified.

Every linguistic sign is located on two axes: the axis of simultaneity and that of succession.

Linguistic sounds, considered as external, physical phenomena have two aspects, the motor and the acoustic.

At first acoustics attributed to the different sounds only a limited number of characteristic features.