Languages differ essentially in what they must convey and not in what they may convey.
Roman JakobsonRemember 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.
Roman JakobsonSemantics, or the study of meaning, remained undeveloped, while phonetics made rapid progress and even came to occupy the central place in the scientific study of language.
Roman Jakobson