"I will use a form of punctuation of my own, which will be something like this - when one is beginning he takes a long breath, for this use a capital. When he stops for breath, a comma, and when it is all gone, a period. Don't know the use of a semi-colon, but expect it is when one thinks he is out of breath and isn't."
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Source : Anne Ellis (1999). “The Life of an Ordinary Woman”, p.16, Houghton Mifflin Harcourt