There is nothing of themselves in their tone.

The trouble is to have a really beautiful voice one must have a really beautiful soul behind it.
If you drop the tension of your voice in an argument for the sake of getting a clearer mind and meeting your opponent without resistance, your voice helps your mind and your mind helps your voice.
They act and react upon one another with mutual benefit.

If you lower your voice in general for the sake of being more quiet, and so more agreeable and useful to those about you, then again the mental or moral effort and the physical effort help one another.
It adds greatly to a woman's attraction and to her use to have a low, quiet voice--and if any reader is persisting in the effort to get five minutes absolute quiet in every day let her finish the exercise by saying something in a quiet, restful tone of voice.
It will make her more sensitive to her unrestful tones outside, and so help her to improve them..