Lecture II

The same applies to animal communication through sound. And here a key question needs to be answered first. In order to speak, the human being uses the larynx and other speech organs. The higher animals also possess these organs, even if in a more primitive form. If we disregard certain animals capable of producing sounds that in some species have developed into a kind of singing, but think instead of animals that emit only very primitive sounds, an obvious question comes to mind (and I raise this question not only from a causal, but also from quite a utilitarian point of view). Why should such animals have a larynx with its neighboring organs, since these are used for speech only by the human being? Though the animal is not capable of using them for speaking, they are there nevertheless, and this even very markedly. Comparative anatomy shows that even in relatively dumb animals—dumb in comparison with the human being—organs of this kind exist.