By perpetual exertion I gained it a second time, and now was a diligent observer of the circumstances attending it.

Gradually I subjected these finer and more subtle motions to the command of my will.

What was at first difficult, by exercise and habit, was rendered easy.

I learned to accommodate my voice to all the varieties of distance and direction.
It cannot be denied that this faculty is wonderful and rare, but when we consider the possible modifications of muscular motion, how few of these are usually exerted, how imperfectly they are subjected to the will, and yet that the will is capable of being rendered unlimited and absolute, will not our wonder cease?
We have seen men who could hide their tongues so perfectly that even an Anatomist, after the most accurate inspection that a living subject could admit, has affirmed the organ to be wanting, but this was effected by the exertion of muscles unknown and incredible to the greater part of mankind.
The concurrence of teeth, palate and tongue, in the formation of speech should seem to be indispensable, and yet men have spoken distinctly though wanting a tongue, and to whom, therefore, teeth and palate were superfluous.

The tribe of motions requisite to this end, are wholly latent and unknown, to those who possess that organ.
I mean not to be more explicit.